Danjo no Yuujou wa Seiritsu suru? (Iya, Shinai!!)

At a certain countryside middle school, a boy and a girl swore eternal friendship to each other. Heading towards that shared dream——the bond between these two remains unchanged over the span of two years. Himari Inuzuka, a cheerful girl who has yet to find her first love, and Yuu Natsume, a botanical enthusiast who loves flowers, still spend their days peacefully as best friends in the gardening club in the second year of high school. 「If Yuu can’t get married, I have to take responsibility.」 「I’m having trouble now because after Himari said that, your brother began calling me ‘My brother-in-law!’」 However, when Yuu reunites with his first crush, the gears of their relationship suddenly...