Read Ore wa Shiranai Uchi ni Gakkouichi no Bishoujo o Kudoiteita Rashii: Baito-saki no Soudan Aite ni Ore no Omoibito no Hanashi o Suru to Kanojo wa Naze ka Tere Hajimeru Vol. 3 Ch. 18 on MangaDex!
I have been in the mood for something something ultra-sweet recently and after searching around, this fit the bill perfectly. It is just pure, unadulterated warm fuzzy feelings. Yeah, it's tropey as hell and the plot doesn't hold up to much scrutiny, but that's not the point. Just sit back and enjoy the ultra-concentrated romance.