gal guardians
Gal Guardians : Demon Purge 2D Castlevania type shooter-jump n run game developed by Inti Creates CO., LTD and is part of the Gal Gun franchise.
The game follows the Kamizono sisters of Shinobu and Maya on their quest of freeing their school from a dimensional merge caused by the antagonist Kurona which caused their school to turn into a giant demon castle which the player has to fight through.
Main Characters
Kamizono Shinobu
Kamizono Maya
Kurona
Adult Kurona
This tag implicates gal_gun_(series) (learn more).