Tenkou Saki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi datta Ken
TenBin / Tenkosaki: The Neat and Pretty Girl at My New School Is a Childhood Friend of Mine Who I Thought Was a Boy / The Case of the Neat and Beautiful Girl at My New School Turning Out to Be My Childhood Friend Who I Used to Play with Thinking She Was a Boy / てんびん / 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
Rated 16+ Ongoing Released: 2021
Seven years ago, a boy promises his closest male friend that their friendship will last. When they meet again in high school, he discovers that his childhood friend is now the school’s elegant and beautiful girl. Despite her changed appearance, she still acts just as familiarly with him as she did when they were children. Their reunion brings the old promise—and their unexpectedly changed relationship—back into focus.