Listless geek Mizuto Irido and introverted nerd Yume Ayai seemed like a match made in heaven, connected by their mutual love for literature. Unfortunately, their differences gradually grew, and they separated just after their middle school graduation. But, as if by divine comedy, the two find themselves reunited as step-siblings. A rivalry begins to brew between the former couple, both unwilling to acknowledge the other as the older sibling. In an attempt to "solve" this issue, Mizuto and Yume agree upon a rule: whoever crosses the boundaries of siblinghood norms loses, and the winner will not only be called the older sibling, but also get to make a request. However, now that they live under the same roof, the lingering memories they share start to influence their actions—possibly rekindling the feelings that may not have been fully extinguished in the first place. [Written by MAL Rewrite]

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Secondary Tags

Openings (1)

Characters (12)

Mizuto Irido MAIN

Yume Irido MAIN

Akatsuki Minami SUPPORTING

Chikuma Tanesato SUPPORTING

Isana Higashira SUPPORTING

Kogure Kawanami SUPPORTING

Madoka Tanesato SUPPORTING

Maki Sakamizu SUPPORTING

Mineaki Irido SUPPORTING

Nasuka Kanai SUPPORTING

Natsume Irido SUPPORTING

Yuni Irido SUPPORTING

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