Here's a sequence featuring Yugamu Omokage from The Hundred Line. The idea was suggested by TPoN.
"First suggestion centers Yugamu Omokage from hit game The Hundred Line Last Defense Academy! Yugamu is well known to be rather strange but helpful in game, and does care for others and wants to keep them safe despite his eccentricities. So being the best at creating things such as potions and other drugs to help the others, he accidentally creates one that causes him to grow absolutely massive! In turn forcing him to try to escape the academy so he doesn’t destroy it…while growing big enough to smother it under his mass and bulge~ but no matter what happens, he’s greatly enjoying the new size over the others and especially teasing Takumi with it."
Seems like he's gonna have to figure out a formula to get back to his normal size...if not tempted to make himself EVEN bigger~
Hope you like it!