Shukufuku no Campanella

In the trading city of Ert'Aria, Leicester Maycraft works as an item engineer for the adventurer guild Oasis. During a rooftop gathering with friends to observe a meteor shower, a falling meteor narrowly passes by them before striking the chapel's steeple. Inside the damaged structure, Leicester discovers a hidden chamber containing a girl in a deep sleep. She awakens and claims, "You must be my father!" This strange meeting sets Leicester on an unforeseen journey.