"...Oh. I live in 102. Nice to meet you, my neighbor." Shortly after moving, I met... a dangerous blonde band girl covered in piercings who rummages through other people's belongings without permission!? Her name is Adachi Hina. At first, I thought the neighbor gacha was a complete failure, but we hit it off when we started talking about music♪ Just as we were getting to know each other as fellow hobbyists and feelings for each other started to grow... I found out that she was going to have a drink at home with a handsome guy. ...I honestly couldn't hide my shock. But then, I got a call from her...!?