A female college student who lives on the upper floor of an apartment building. Even so, she is called an otaku girl who dresses modestly. I'm not really interested in it, but the manga makes me go back and forth between each other's rooms. It's amazing that such an old man is friends with a girl much older than him, but the surprise doesn't stop there! The true identity of the sober virgin is that she is curious about male genitals and masturbates a lot, and she has huge breasts like in manga! The days when they devour each other's bodies like crazy.