貰った三つの外れスキル、合わせたら最強でした

Muto Kusina is a young boy who lost his life after a brutal past life.When he was reincarnated, the Goddess bestowed upon him three skills: [Super-speed Regeneration], [Immortality], and [Tenure: Unyielding]. However, these were not offensive skills and were a dud!He was reincarnated with these skills into the [End of the Forest of Disaster], where a large number of monsters with a "Danger Level S" roam, each of which is powerful enough to destroy the world.With no offensive skills, Kusina should have been killed by the monsters right away, but...?By combining the three skills, he instantly regenerates no matter what attack he receives!What's more, he gets stronger with each attack――