Fuuka Tomita is an ordinary office worker whose hardworking, serious personality means she has no time for a boyfriend, not for lack of wanting. Through all her hard work, the thing that heals Fuuka's heart the most is her work senpai, Yuta Mizuno. She's in love with her kind-hearted superior but keeps her feelings to herself. One day, they're sent on a business trip together, just the two of them, when a sudden typhoon stops them from returning home. They head to a nearby hotel to find somewhere to stay, but there's only one room left. "It's okay. I'll find somewhere else. You stay here, Tomita." Even at times like these, her senpai is kind. Fuuka can't stand making him go outside and offers to share the room. Of course, he refuses. But Fuuka doesn't back down. She can't force him out into that storm. After a few rounds of back and forth, he suddenly changes his mind.. "I tried so hard. I tried so hard not to make things weird. It's all your fault that I failed." She's never seen this "male" side of him before. She's puzzled by his teasing words and new facial expressions, but she can't resist... Swallowed by a pleasure she's never known.