The skill "Protect" is life-threatening, but I was able to flirt and love harem with Choroin! (Associated Names)

Kazuya Nambu, a chubby and dull high school student who escaped into a locker after being accused of peeping, was transported to another world as a hero. The guide – fairy Elle, said that Kazuya was given the ability to instantly recover even from minor damage -『Super Regeneration』, but his physical ability was still poor…!?…