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

A Neat and Pretty Girl at the Transfer Destination Was a Childhood Friend Who Used to Think That She Was a Boy and Played With Her., 転校先の清楚可憐な美少女が、昔男子と思って一緒に遊んだ幼馴染だった件

My friend and I recently met again after a long time apart. When we saw each other, it was clear that she had transformed into a beautiful and innocent young woman. As soon as Hayato came into view, she shed her coat and acted just like the bratty little boy I remembered from our childhood days in the countryside. Despite this, the bond between us remains unchanged.