Here's a picture featuring Ginro from Dr. Stone. The idea was suggested by Chartias.
"Ginro from dr stone making fun of his older brother because now he is more Huge than him"
Seems like Senku was working on a new formula to accelerate the development in muscles, so it can be used on the hunters and warriors of this new, developing society. The moment he asked for volunteers to be "guinea pigs", Ginro jumped out of the crowd, rushed towards Senku and grabbed him by the collar "I NEED to be the first test subject, pleaaaaase!" He said with teary, puppy eyes. Since there were no other volunteers, might as well accept his offer...
The first couple days of doses didn't show any effect, but before no hope was seen...the next day, Ginro woke up his his arms and legs hanging off his bed, while the bed itself was crushed under his enormous weight! Amazed by his new body, he jumped off his bed, and landed with a big "THUD", making the whole hut shake because of the impact.
He quickly put his clothes on, not noticing that they barely fit him anymore, and were torn into pieces the moment the fabric attempted to fight Ginro's massive muscles. After he was ready, he rushed towards his big brother, who was pretty big and athletic already...but the moment Ginro could see his brother...GInro seemed like the big brother now! His brother could barely reach Ginro's knees! Not only that, but his muscle mass was far much thicker than his older brother's.
It only took a few econds for his new size to go to Ginro's head. Bumping his "big" bro with his strong arm, pushing him down without even putting any effort, and proceeded to flex his other arm, the bicep almost the size of his whole brother's torso! "Well then, who's the big brother now?~" He said cockily at his now little brother, who only looked back in annoyance.
The formula was just starting to take effect...but was this the limit of its effects? Will Ginro stay that size? Or keep on growing bigger along with his ego?...WhooOOOoOOo knows~
Hope you like it!