I feel like the premise of MC being stuck in high school is totally irrelevant to the plot except to fetishize a man who looks like a minor. A lot of the smut scenes happen when MC is wearing a high school uniform, oversized clothes or his grandmother's floral clothes to highlight this. That seriously gave me the ick. You can still establish all the negative things that happened to the MC even without all that. The author could have even set the story during a year where he's already graduated high school but can't go to college due to his father's debts. It will literally have no impact to the story except it will get rid of all the questionable smut.
I feel like the premise of MC being stuck in high school is totally irrelevant to the plot except to fetishize a man who looks like a minor. A lot of the smut scenes happen when MC is wearing a high school uniform, oversized clothes or his grandmother's floral clothes to highlight this. That seriously gave me the ick. You can still establish all the negative things that happened to the MC even without all that. The author could have even set the story during a year where he's already graduated high school but can't go to college due to his father's debts. It will literally have no impact to the story except it will get rid of all the questionable smut.