Kansai Jin to Hukumen Satsujinki
Complete | Maria , mりあ | 2019 released
Besides the 'murderer' and confinement premise, the story was surprisingly unique and lighthearted enough that I felt I had to keep reading (Also I read this late at night when I was sick and had to reread most of it bc I was convinced most of it was a fever dream lol)
Dear Sister, I've Become a Blessed Maiden