Well... the protagonist isn't invincible, but he won't be defeated...
Well... there's a harem, but he's not a womanizer...
Well... DNF, Infinite Stratos, Fairy Tail, Zero no Tsukaima, To Love-Ru, Nura: Rise of the Yokai Clan, Is This a Zombie?, One Piece, Bleach, Beelzebub, Gintama, Katekyo Hitman Reborn!, Aria the Scarlet Ammo, Protect the Cat-Eared Girl, Haiyore! Nyaruko-san, Sket Dance, Blue Exorcist, Detective Conan, Shining Hearts, Pokemon OP, Digimon seasons four and six, Medaka Box...
The rest is undecided...
This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.
Are you writing nonsense? It doesn't look good to have hair just after birth.