Mushoku Tensei: Reincarnated as a Beast Race - Chapter 63 - Getting Back on Track

A number of university students are given a simple survey in which they must watch a number of short films and rank them in order of preference. The reader takes the survey along with them with the short films being told as short stories.

A man is reborn into the world of Avatar: The Last Air Bender as a waterbender from Katara's tribe. Best of all, he was the same age as her, and he had a system with him to help.He knows the future and a system that lets him continuously get stronger by completing quests or long-term missions, as well as giving him the ability to copy abilities from others for himself. He will become invincible in the world of Avatar, even more so than the Avatar himself.

It is eight or nine years for her to meet her first love again. In the gas station of highway, she sees him walking from the grocery store. She looks at him, not believing what she sees and asks, ‘Do you still remember me?’ He looks at her, with a bottle of mineral water in his hand, and says peacefully, ‘Yes, even if you became ashes.

- Description from Novelupdates

One day, when a novelist woke up from a restless sleep,he realized that he had transformed into his 12-year-old self.