It started when Tsukishima Kei got his first heartbreak on a rainy day. He was sitting on a bench at the park, while drenching on the rain when suddenly, Hinata Shōyō showed up, who has zero experience in love. He offered an umbrella to the crying stranger without any much thought. But what if they meet again? A heartbroken guy and a Zero love experience guy, can this two be in a relationship? Will it work or will it fail?