The main character, Yu, who fell into college and was shaken by her and came to her boarding house to lead a ronin life. However, it was right above the show pub, and a girl named Rei Asagiri already lived there. Just below the room, sultry older sisters seduce a man with naked weapons, and in the same room, a cute girl who is embarrassed to change clothes. The feet, thighs, and thighs that can be seen through the gaps in the door … on top of that. It’s no longer studying! Yu Tsutsui, Ronin, studying a lot of girls! !!