Hello. I'm the Dark Dragon who you helped the other day.

One night, a beautiful girl claiming to be a dragon appeared before me. And then she said something like this―― "I want to repay my debt to you, Master!" A high-level magician named Marvin who can only use magic under certain conditions (← with a nasty expression), and a Dark Dragon named Luushiel whose magical power has been sealed (← huge-breasted beautiful girl). Two people with nowhere to go lean on each other, harboring grand ambitions while getting flustered over immediate concerns, somehow managing to overcome hardships as they haphazardly travel the world――a heartwarming fantasy adventure begins! (※Due to various circumstances, the Dark Dragon remains in human form throughout the story.) ※Various famous and unknown monsters, gods, angels, demons, yokai, and other beings appear in this work, but their appearances, abilities, personalities, and other characteristics may be altered based on the author's unique interpretation. We ask for your understanding in advance. Author's Page http://mypage.syosetu.com/489881/