Sorry about the lack of updates. Here's the list of new content since the last update released to itch.

V18
New story event, (unlocked by beating both Crypid Peak and the Haunted Castle), New custom boss music, enemy battle music, and specialized music for the Medusa Boss fight during the Vulpine ship encounter, Rebalanced the Bunny dungeon to be easier, New After Class events for Angel and Melody

V19
New stealth segment, New After class events for Rachel and Angel

V20
New side story dungeon (Latex Shrine) (Have to get to a certain point in Akari's After class events to unlock it), New after class events for Akari and Heather.

V21 (Patreon)
A new arena challenge. (Unlocked by sneaking into Delta Mu and talking with Marceline) (This one has a little surprise after you beat it, head to Delta Mu's entrance and talk with the security guard after beating the challenge to see what it is. (May want to grind first. Trust me))
New after class events for Angel and Mimi (This is Angel's last after class event, as for Mimi... well... I'll let what happens there be a surprise)