Day 16 (Saturday):
Cock Length: 11.61 inches (flaccid), 19.45 inches (erect)
Cock Diameter: 3.74 inches (flaccid), 5.48 inches (erect)
Testicle Diameter: 6.05 inches
Cum Amount: ~5.41 gallons (per orgasm)
Breast Measurement: 44.44 inches (32L)
Butt Measurement: 52.43 inches
The day started out like any other. Lightning got up, cleaned up, showered, and wore a tank top and sweat pants, because she was going to relax for the day before her date. But she soon found out, that wasn't going to happen. As she was putting on her clothes, after getting out of the shower, she was drying her hair when she heard a knock on the door. "Huh? Who could that be...?" She got to the door and opened it enough to show her face, but not her body. "Huh?!" Lightning was surprised by who it was. "Hey, Sis!" a voice called out. It was here cheery sister. She was wearing a sleeve-less button up dress shirt, with the top button undone, showing her breasts that were much smaller than her big sister's size. She was also wearing a red plaid miniskirt that did little to cover her sizable butt and thighs, with thigh high socks. While she was always smaller in breast size compared to her sister, she did have a bigger butt. Even with Lightning's growing butt and hips, her little sister still had her beat with her 55 inch butt. "S-Serah?! Wh-What are you doing here?!" "Oh come on. I can't visit my big sis?" "Y-You should have let me know before hand!" "Why? Got a girl in there?" Serah teased. "N-No! This is just unexpected, is all..." "So... aren't you going to let me in?" "H-Huh...? Oh... yea..."
Lightning slowly opened the door and turned around. Serah walked in. "I'll never get over how big your place is, Sis..." "Y-Yea, well..." "Oh my goodness! Sis!" "Wh-Wha...?!" Lightning froze. "What's that giant bulge in your pants?!" "O-Oh... Th-This..." Lightning's giant cock and testicles were pushing out the front of her sweats a great deal, anyone would notice. "I-It's nothing..." Serah ran in front of her sister, getting in close. "Is that your cock?!" "I... uhhh..." Lightning was starting to blush. "Are those your testicles?! They're enormous! What happened to them?!" Lightning's cock throbbed in her sweats. "Holy crap! I-It just twitched!" Lightning was standing awkwardly, looking off to the side in embarrassment. "You have to let me see it!" "H-Huh?! N-No way!" "Come on! It's not like I haven't seen it before!" Lightning's cock throbbed again. "W-Well... Th-This is different!"
Serah had been so distracted that she was just noticing her sister's breasts. "Are your boobs bigger too?!" Serah pointed at Lightning's chest. They were much fatter and sticking out further than Serah remembered. "I-I... M-Maybe..." Lightning tried to cross her arms, but in doing so she pushed her breasts up, unintentionally showing how much bigger they had actually gotten. "Woah! They're huge! What did you do?!" "N-Nothing!" "Come on! Let me see your body! Your figure looks amazing!" Lightning didn't want to, but she knew she couldn't resist the look her little sister gave her, with her big blue eyes. "F-Fine!" Lightning then headed to her bedroom with her sister following.
Lightning stood and faced her sister. "Y-You're really going to make me do this, aren't you...?" "Oh, stop being so shy. Although... it is really cute when big, tough Light gets embarrassed." Serah smiled and winked at her sister. Lightning blushed harder. "Sh-Shut up..." Lightning then slowly pulled down her sweats, revealing her cock and testicles in full. "Holy crap, Sis! You're enormous!" Lightning's cock twitched and slowly started swelling. "S-Stop saying things like that!" "Woah... Does being told how much of a giant cock you have turn you on?" Serah teased. "Hng... N-No..." It throbbed as it started swelling more. "Hehe... But Sis... your cock is just so huge..." "G-Gah..." "You must have the biggest cock in the world..." "S-Stop..." Lightning's cock was getting harder and lifting up, pre-cum began leaking out. "And those balls... I bet you could easily bloat a girl up with those massive things..." "Hahhh..." "Oh... my... god..." Lightning's cock was now fully erect, leaking a copious amount of pre-cum.
"It's so long... and thick..." Serah was reaching her hand out, ready to touch it. "P-Please... d-don't..." "Huh?" "I-I don't want... to... to cum..." "What do you mean? Would a simple touch really set it off?" Lightning nodded her head. She was looking over her sister's body, trying extremely hard to hold herself back from doing something she would regret. She could feel her testicles filling with more cum and her cock throbbing hard. Serah was sitting back, watching the spectacle before her in amazement.
When Lightning finally got a hold of her senses, she quickly grabbed a bag and covered her cock to catch the pre-cum. "Ha... Ha... Y-You're going to owe me... for that..." Serah giggled. "Sis, your cock is incredible! You definitely must have the largest cock in the world." "Ha ha..." Lightning laughed sarcastically as she sat down. "But... where you really going to cum so easily?" "Y-Yea..." "Well you must be pent up! Why not let it out?" "I... ummm... I..." "What is it?" "H-Have you heard of... a thing called... No Nut November...?" Lightning said embarrassed and quietly. "Sis, you didn't! You're not! It's just some dumb challenge online!" "I-I know... But since I started... I didn't want to give up..." "Ohhh... That's my stubborn big sis!" Lightning grunted. "So is that... So is that why it's getting so big?" "Y-Yea..." "And your boobs, too?!" "Y-Yea... M-My butt... has also been getting bigger..." "H-Huh?! Y-You better not pass me!" Lightning chuckled. "You better not do this challenge. You wouldn't make it." "I so could!" Lightning started giggling while her sister pouted.
"Well... you have made it over half the month. How has it been?" It's been getting really hard to hide this thing... If you can even call it that anymore... And it's starting to get set off really easily... Like it's been getting more... active... as the days go on..." "A-Are you... going to keep getting bigger...?" "I don't know... I have no idea what I'm going to do if it gets even bigger..."
The two sisters chatted for a while after their conversation about Lightning's challenge. They eventually headed out to go get lunch together. Serah was amazed by the new clothing Lightning had to get made. When they went out through the public, Serah could see how nervous and embarrassed her sister was. So Serah talked to Lightning to help her ignore everything and only focus on what she was doing or the conversation they were having. Lightning tried it and it did help a bit, while her mind would still drift places, she was learning to ignore those thoughts.
Later in the day, as the two hung out together, Lightning brought up that she had a date in the evening. Serah was shocked and happy for her sister, because she knew it wasn't too often that Lightning went on dates. After her sister had forced all the information about the girl out of Lightning that she could get, the two headed back to Lightning's place. There Serah was looking through Lightning's clothes, picking out what she should wear. It didn't help Serah that most of the stuff Lightning had was suits and work clothes. But she did find a gorgeous white dress that Lightning bought because she thought it looked nice, but she never pictured herself wearing. Serah smirked as she tossed it to her sister and told her to get dressed. Lightning hesitated, but she did want to look nice, so she complied.
Lightning found the dress a bit tight. Her breasts were being squeezed out the top a small bit, and it felt tight around her thighs. The dress was short, but just barely long enough to hide her wrapped up cock and testicles. Lightning was embarrassed, but she walked out to show her sister. Lightning was blushing and pulling the end of the dress down. "Wow, Sis... You look beautiful..." Serah then picked out so earrings and jewelry for Lightning to wear, brushed her hair, and helped her put on a bit of make-up, which Lightning was never too fond of wearing. In the end, Lightning looked like a gorgeous supermodel, to which Serah had complimented. When the time came, the two girls left the house. "Stop looking so nervous, Sis! You look beautiful! Crystal is definitely going to love it!" Serah told her sister good luck and to have fun before getting in her own vehicle and leaving.
Lightning sat nervously in her own car. It took her a few minutes to turn on the engine and head off. When Lightning arrived at Crystal's place she found it to be a small apartment building. She got out and walked to her room, fumbling over her heals a few times along the way. She took a deep breath before knocking on her door. Crystal quickly answered. She was wearing a dark purple dress, much simpler than Lightning's. Her hair was up in a ponytail, like she had before, but this time it wasn't as messy. Both girls blushed at one another when seeing the other. "Wow, Claire... Y-You look really nice..." "Y-You too." The two girls then walked side by side. Lightning caught Crystal's eyes keep glancing at her chest and hips, but she didn't comment on it. Then they got to Lightning's car. "Th-That's your car?!" Crystal said in shock. "Yea..." Crystal slowly and cautiously got in the car, like she was scared she was going to ruin it. Lightning giggled and told her it was okay.
As they drove, they sat quietly for the first mile or two. Lightning again caught Crystal taking quick glances at her, only this time it was at her crotch, which made Lightning's face turn more red. Wanting to break the silence, Lightning started a conversation. She spoke of her day and hanging out with her sister, and telling her the kind of cheery girl Serah was. Crystal was somehow more nervous than Lightning was, saying she didn't do much that day and mainly just stood home. When they arrived at the restaurant Crystal gasped when she saw the restaurant. It was a place well-known to be really expensive and high class. "I-I shouldn't be allowed in there! I-It's way to fancy for me!" Lightning giggled and told Crystal it was fine and that she could handle the bill. Crystal only got more hesitant, not wanting to make Lightning pay for everything. After multiple times of telling her it was fine, Lightning managed to force Crystal to walk with her inside the restaurant. Lightning had wrapped her arm around Crystal's, which made her blush heavily, but calmed her, and Lightning's nervousness as well.
Lightning had reservations, so they quickly got a table. Crystal was staying close to Lightning as they walked through the place. She was looking at all the fancy, well-dressed people, the fancy decorations, and the expensive looking food. At their table, Crystal was quietly staring at the menu. Lightning was just watching her, giggling at her reaction. When it came time to order, Lightning ordered some expensive wine, which she told Crystal it was not, then ordered her food. Crystal stood quiet as the waitress waited for her order. "Crystal? Hello? What are you going to eat?" Uhhh... Uhhh... Th-This one!" Crystal pointed at a random dish, she wasn't sure what any of the dishes were.
After the wine came and two started drinking, they relaxed themselves and finally began having a conversation. They talked about themselves, like their hobbies and personal lives. Lightning spoke of a time when she was a warrior and the countless battles and the constant battles and hardships she had endured. She smiled when talking about it, because if it wasn't for those, she wouldn't be where she is now. Crystal stood silent as she listened to Lightning's story with a thoughtful expression on her face. Crystal was working as a waitress at a less high class restaurant. She was only making enough to keep her place and for essentials, having to save her money if there was anything she wanted. Lightning now understood why Crystal was so scared of a restaurant like they one they were currently eating at.
Over the course of their meal and dessert, the two girls were getting more comfortable with each other, even laughing and joking with each other. Crystal was starting to smile more than be nervous or scared, which Lightning was enjoying. At the end, Lightning took the bill, which Crystal didn't dare ask about, and paid it off. Lightning then stood up and asked for Crystal's hand. She blushed, but gave Lightning her hand. The two then walked out the restaurant, holding each other's hand.
When Lightning dropped Crystal off at her place, Crystal told Lightning how much of a wonderful time she had, which made Lightning happy. "We definitely need to hang out more... B-But not at such expensive looking places!" Lightning only laughed and said, "We'll see." The two said their good nights and Lightning headed home.
As Lightning got undressed, she sighed as she looked at her crotch. She hadn't said or shown it, but throughout the time Lightning was with Crystal, she had to hold her cock back from hardening the entire time. Feeling it throb and pulse in her panties throughout the whole dinner. Anybody that glanced at the bottom of her dress would have surely seeing it. Lightning removed her panties and her semi-erect cock flopped down, with a few drops of pre-cum falling down. Lightning only wanted to think of Crystal at that moment, so she just got on her pajama shorts, which at this point were only good for covering her testicles, but even those were starting to get too big for the small shorts as Lightning had to squeeze them inside. She wrapped her cock, and laid on her bed, thinking about her date until she fell asleep...