In Japan there is 4 volumes 20 chapters complete of the manga, also has light novels. Seven Seas Entertainment has picked it up for English translation and Vol. 1 is coming out on December 1, 2026. It will be called "Series: I Thought My Childhood Friend Was a Guy… Now She’s My Wife and It’s Going Too Well! (Manga) Vol. 1".
In Japan there is 4 volumes 20 chapters complete of the manga, also has light novels. Seven Seas Entertainment has picked it up for English translation and Vol. 1 is coming out on December 1, 2026. It will be called "Series: I Thought My Childhood Friend Was a Guy… Now She’s My Wife and It’s Going Too Well! (Manga) Vol. 1".
Link below for more info
https://sevenseasentertainment.com/series/i-thought-my-childhood-friend-was-a-guy-now-shes-my-wife-and-its-going-too-well-manga-vol-1/