Dunno if asking for this kind of sauce is allowed but i'll try to not mention anything 18+ All i remember is the guy had a crush on some girl, wrote a letter but sent it to the wrong girl (delinquent?) and went out with her over time falling inlove one day he gets invited to her house and confessed that he accidentally gave her the letter and went out with her which made her cry and then he confessed properly happy wholesome vanilla loving ensues i need to read it again because i crave wholesome from reading too many ntr
I like your Calli pfp also I have no idea what that manga is but here's another recommendation. It's called Kubo-san Doesn't Leave Me Be- (A Mob) it's about a pretty girl who wont leave this mob character alone and they start liking each other. It's extremely cute and wholesome also sorry for my bad summary