Monster Mania 「Chaotic Monster Evolution」

Monsters! Intimidating creatures filled with vigour and power. Dungeon! A place furnished with Monsters. The Way of The Monsters is no easy road. A little monster burgeoned out from an egg about 50cm long—Filled with orange and red markings with a white shell. The little monster—guided by its survival instincts, embarks on a journey. As, The monster learns the madness present inside the dungeons.

The creatures known as monsters—The Monster Mania.
The Novel Is Also Published On RoyalRoad And Scribblehub

Sauce for the cover art: https://designyoutrust.com/2019/02/to-live-for-my-death-the-deadliest-badass-nightmare-creatures-of-antonio-jose-manzanedo/