Fifteen witch's last journey (1st volume 1)

the publisher:
Author: Yoyamachi Meeme
Size: 128mm x 182mm
Number of books: 1
Language: Japanese
Category: Youth manga, manga
Latest publication date: 2021-02-13

Synopsis:
Cup Island where witches and apprentices live peacefully.
The 300th anniversary night that praise the founder "Flame Witch"
The island was attacked by a mysterious giant floating subcontractor and was wrapped in flames.
Only a few apprentices, including Loroa, survived.
Now that there are no reliable adults, in search of "flame witch", which does not know if it exists,
The apprentice witches decided to leave ...!?
"A place far from the universe" Authentic fantasy by the author who is notable in comicalization