Can't remember...

i'm looking for a bl in a school setting. i believe it was shounen-ai, but it could've had a few spicy scenes as the end(?)... the only scene i remember is the ml hating onions. the classmates and mc then think of him as a "baby" for being picky of his food.
i only want to read it again for that specific moment. if you can help me find it, i would greatly appreciate it. thank you.