Getsuyoubi no Maria
月曜日のマリア
Maria Lives Upstairs
2kai no maria· 2階のマリア
manga
After suddenly being confessed by a naive high-schooler, Hikaru, Ikuto "Maria" Maruya could not stop thinking about that awkward but unexpectedly strong boy. He doesn't want... to hurt his feeling. Although Hikaru is doing his best to get close to the mature Maria, Maria only think about Hikaru's feeling as temporary as young male puberty! Facing Maria who always avoids his feeling, Hikaru then decides to change his plan... (Source: Manga.Club)