2busy2sleep
The book is probably from his master's mistress. The master has katana and sea dragons are usually eastern.. also its suspicious that Leon is not yet allowed to meet the family of the mistress and his master seems to tolerate dragons even tho he is was a dragon slayer. Maybe I'm wrong kek.
A certain narrator from a certain anime somehow ended up narrating this battle.
Void to stars, magic's origin, history and becoming a scientist... She's going all in KEKW