New game 'Apothecary Hero', although not a sequel, but has a story based on the game. 'Kaitom Hero' is a parallel world and there is a time in the game after the end of the main story of the 'Kaitom' game, although it is not a similar game. But the difficulty and challenge are definitely the same!
Apothecary Hero
https://store.steampowered.com/app/2299450/___Apothecary_Hero/