Danshi da to Omotte Ita Osananajimi to no Shinkon Seikatsu ga Umaku Ikisugiru Ken Nitsuite

Two childhood friends reunite after a decade, only to discover that one of them has changed in a surprising way. One had always believed the other was male, but upon meeting again, the friend is now a striking young woman. Overcome by this revelation, the friend who had assumed the other was a boy fears the end of their bond. Instead, their relationship transforms from friendship into marriage. The story explores their evolving connection as they navigate this new dynamic.