You thought of a brilliant, yet an immature plan. Why not make Minghao older? As his father, you felt bad. But you know that they are not really your son since you are not really Chang. You picked up your bag once again to get the box out. You waited for an hour or so just to make sure that Minghao is asleep. The drama was now over and you turned off the TV. You walked up the stairs and went into his room. There he was, snoring, totally asleep. You closed the door and walked closer to him. You sat carefully on his bed and pulled his pajamas off while trying not to wake him up. Next you pulled off his underwear to reveal a flaccid penis. We has not circumcised yet but his balls sure are getting much lower since he was about to enter puberty. You opened the box and picked a good condom. You saw another one of those condoms you used, the "Going Older" One. You tore it's packing and pulled out the condom. It wasn't as big as the condom that you used but you placed it on his penis. It didn't fit at all so you removed it first and unrolled it before you put his penis back inside. Suddenly, he moaned and you see his boyhood grow and got hard to fit the big condom. It was now cut and his glands are showing. It was awkward to see a little boy having an adult dick. You then see his balls drop and grow to match his much larger cock. You felt his foot move so you stood up and see that his legs are getting longer. As well as his arms, they are much longer than before. His torso gone wider as well. His clothes grows with his body too. You came to him and lifted his torso. You removed his shirt to get a better view. As you were holding him, you felt his muscles got harder as well. His head fell back and you saw his adam's apple bulges out. His face looked much older as well. His jawline got much pronounced as some pimples appeared on his face. You dropped him back on his back and you walked far from him and look looked as his body as it gets much muscular. Just like yours, they got much bigger and much harder. His chest got bigger. His shoulder got broader as he went puberty. His biceps grows, as well as his legs and thighs. His abs formed into six pack. His waist formed a V line. His dick extended more.
Finally his change was done. Before, he was just a 5 ft. 1 inches boy, but now he's about 6 ft 1 inched 20 years old man.
His eyes opened you got startled for a bit. But then he got up and leaned on the headboard of his bed. He looked at you and his own new dick and then he absent mindedly removes the condom off his cock and jacks off. You were surprised by his sudden action but he seems like he was still sleeping.
"Hnnng-fuck." He was cursing and moaning like an adult would do while beating his cock.
You got mad for a second, you are looking at your much older son jacking off. Your fatherly feelings for him was active.
"G-Gah! I- I'm gonna cum" He was moaning in Chinese. "H-Here it comes!"
Then a big load of semen erupted out of his dick. Some sticked on your face. He made a mess on his bed. Reality then started to change and his bedroom turned into a much adult like. A laptop appeared on his desk. Some action figures disappeared and were changed into some school books. His bed got bigger. The clothes that you removed off him turned into some bigger clothes that fits him. He fell off and layed on his bed once again.
"M-Minghao." You came closer to him. You were worried of what happened to him, but then he looked at you with taking deep breaths.