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Living alone, protagonist Riku Kagaya suddenly loses his home in a fire and is left with nowhere to go.

As Riku is at a loss, his classmate and genius pro gamer, Futaba Tennozu, appears before him.

「If you're in trouble... why don't you come to my place?」

Riku, clutching at straws, follows Futaba. However, what awaited him there were two stunning beauties in surprisingly casual attire — Ichiya, a genius pianist, and Ami, a genius track-and-field athlete.

Now cohabiting with the three beautiful sisters, Riku begins to provide support, starting with housework, to win their trust.

Witnessing Riku's self-sacrificing efforts to be useful to them, the three sisters gradually find themselves falling for him...

A chaotic cohabitation romantic comedy about geniuses falling for an ordinary person begins now!

※Book adaptation confirmed! Thank you very much.