
You do realize the dude is 18, last year of high school aka about to graduate right? At 18 in my country you’re a legal adult and you can take care of yourself, take decisions on your own, drink, smoke, drive, vote, go to jail, etc. cuz you’re an active member of society.
Also the seme was completely respectful about having sex AFTER the uke graduated, which is not really common in bl’s.
Oh and lastly, this is fiction So get over it

You clowned yourself on this one bud. Seijirou is 32 years old and Ryou is 20 in the beginning. Chapter 1 Page 29 shows Seijirou's age and it stated that Ryou is almost 12 years younger (Chapter 1 Page 26) which makes Ryou roughly 20 years old.
32 with 20 is actually not that bad. Ryou's turning 21 too which tends to be a universal age for adulthood. A 12 year age gap isn't bad at all, it probably just feels weird because more people tend to stick to age gaps in the single digit range.
Westerns have the highest pedophile rate, and they have sex by the age of 11 and get pregnant by 13
But this is gross
Piss off