Review Detail of TRASH_MONAL in Level up Zombie

I really loved this novel but I never thought it would end to early.I want ask JKSmanga the author in first chapter that old man who can control zombie on boat was zain, right?Is this really the end of this work, I really want to know about zain story cause that's not how all the demons would get killed there must be many out there to attack earth.I hope you can continue Level Up Zombie in the future.❤️I love your all work Your fanTRASH MONAL