A Runaway Regigigas

(No heroine) (Not invincible) (Wanders everywhere) (Author goes crazy on a daily basis) (Pokemon) (Pokemon) (The protagonist is usually overlooked) Ahem, I was reincarnated through Impure World Reincarnation. Anyway, long story short, I absorbed the power of the Regigigas that died before me, and thanks to its contribution, things got a whole lot better.