Tenkou-saki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi Datta Ken

Hayato transfers to a high school in the city.

There, he is reunited with Haruki, whom Hayato remembers as a boy he used to play with seven years ago.

Only, Hayato now realizes that Haruki is actually a girl.