Miki's childhood friend, Yuuya, is like a big brother to her. He's kind and always has her back. He has a pretty girlfriend, so there's no way they would ever end up dating... Mochizuki, who looks just like Miki's favorite singer, asks her out on a date. Miki has never had a boyfriend before, and she doesn't know what to do on a date...! She gets advice from Yuuya, but the date turns into a disaster. She talks to him about it again, but he suddenly pins her down and says "I'll be your boyfriend"...!?