Much like the game Carrion or other monster-evolution titles, the protagonist must consume mana or biological matter to evolve into larger, more complex forms.
Another iteration features Yann, a former Lich King, who is reincarnated as a tentacle monster but ends up becoming the "pet" and protector of a young maiden, using his powers to build a safe "crystal palace" for her. I Reincarnated In A Game World as a Tentacle Mo...
Characters interact with a floating UI or "Divine Voice" that provides quests, stat updates (like Talent and Mana), and rank-up notifications. Notable Related Works Much like the game Carrion or other monster-evolution