My [Repair] Skill Became a Versatile Cheat, So I Think I'll Open a Weapon Shop manga volume 3 features story by Ginga Hoshikawa with art by Yukimi Enoki.

While on a scouting mission in the Dark Keep Zone, Luke and his friends are suddenly attacked by a mysterious figure—half-human, half-dragon—who turns out to be none other than the missing Hero Falcon, who had abandoned Luke to certain death! Defeated by the Dark King’s forces and taken prisoner, Falcon now has a shocking accusation to level at Luke.