Kanato is approaching 30 and has no experience in love. After unexpectedly meeting his young partner Mirai, they have a long-distance relationship between Tokyo and Osaka. They take advantage of their free time to go on secret dates, and happiness is beyond their hopes... but Kanato keeps a secret from Mirai.
And Mirai, who appreciates Kanato more than anyone, sees sadness in his eyes. Even though they are supposed to be adults, they can't help but get carried away.... A heartfelt love story between very sympathetic adults.