The large, Golden Retriever-type rich heir and the small, non-romantic girl grow attached even though they're a fake couple!

"Can I touch you more, Rion?" His large, angular hands stroke me until I've melted into a mess... Rion participates in her high school reunion after returning to her hometown from Tokyo. It's been a few years since she's seen her friends, so she claims that she's been breaking hearts all around the city, but in fact, she's never once had a boyfriend! The party ends and Yamato, the son of a rich family, asks for her advice. He used to be chubby, but now he's grown into a strong, handsome man. What Yamato wants to ask her is if she'll pretend to be his girlfriend! He wants to turn down all the annoying matches his parents keep offering, and Rion wants to avoid talking about marriage. They're both innocent when it comes to love, so they end up in a secret cooperative relationship! However, it seems like Yamato's love is even clingier than she expected!