Tokyo Trainee Detective, but a Gentleman

Because of a will, I came to Tokyo to study. Ryusuke Maeyama took over the old apartment building left by his uncle and lived a poor life collecting rent. At first, he thought such days were normal. Until one night, he discovered that the suitcase dragged into the room by the beautiful senior next door was stained with light blood. Not only that, but there were also sounds of chopping bones in the middle of the night... Just as he was calling the police, the senior sister knocked on the door with a bowl of soup. "Gentleman, did you just see it?" "You must keep it a secret, otherwise I will be very troubled, senior." "So please drink this bowl of bone broth while it's hot and become an accomplice!" ———— No systemMultiple heroinesShura field