Alright this shit hit different. So fucking cute, MC is helping his friend get with his childhood friend, until she falls in love with the MC himself, and they date, only to find out his childhood friend is in love with him, so cute, so heartbreaking at the same time. Honestly thought they’d be together forever, but the MC got with his childhood friend at the very end, it was touching, probably the first romance mangas I’ve read where there was completely wholesome, no kissing/etc.
Ao no Flag