Tensei shitara Dragon no Tamago datta

An unnamed hero awakens in an unfamiliar forest without a human body, fighting skills, or even limbs to run with. He has been reincarnated inside a dragon egg, surrounded by creatures capable of eating him before he ever gets the chance to hatch.

Starting from the weakest state imaginable, he learns to survive, gain experience, and evolve from one form to the next. Every transformation brings more power but also greater dangers, and his goal slowly grows from simply escaping the forest alive to becoming a dragon no predator can hunt.