Tadaima, Ojamasaremasu!

ただいま、おじゃまされます！

Rinko, a quiet office worker and secret otaku, just wants to enjoy her anime in peace. But when a neighbor keeps banging on the wall, she asks her other neighbor, Satsuki, for help. Their attempt to resolve the issue goes wrong, leaving a hole in the wall that reveals…Usaharu-sensei, the creator of Rinko’s favorite manga?! Now with nowhere to hide, their lives begin to overlap in surprising ways!

(Source: Crunchyroll)