One Year Of Happiness OYOH

Yagami Noriyuki, a fifty seven year old man, is filled with regrets over how he lived his life.

One day, amid the rain, a woman with horns on her head approached him.

"Mortal, sign this contract and return to your youth!"

There was a catch however...

He only had one year to live and fulfill his regrets.

After returning to his youth, his first quest is to save his childhood friend from a car accident.