Frostfire Legacy - Chapter 16: To the Adventurer’s Guild!

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.

Chatting in the dormitory at night, roommates wonder how much pain Aunt Flow brings. Mr. Perfect He Zhi Zhou has never bothered joining in on these petty talks for amusement. That is, until he became a woman and laid in bed with a white-cast complexion……

Chatting in the female dormitory at night, roommates sighed over the current pairings in the school of engineering, Shen Xi was a little curious that the problem with these topics is that there was no way to test them. Until she became an engineering male and a bar of soap dropped in front of her……

Introduction in one sentence: About how a top-scoring perfect male with no desire in the opposite gender and an amusing female lead were set up like lightning setting the ground on fire spreading out of control—leading to a sweet and rippling life……

Life is so long, don’t be so arrogant. Some things are bound to deviate.

Chen Mo transmigrates into the Battle Through the Heavens world and binds with the Goddess Favorability System.For every point of favorability he gains from a goddess, he receives a corresponding reward from the system.【Ding! Bound to the goddess—Die Ba!】【Ding! Favorability +1. Received a Tier 1 Pill: Accumulation Pill. Hand-holding bonus triggered—gained one incense stick’s worth of enlightenment time.】Looking at the woman before him, Chen Mo exclaimed in shock, “Isn't this Queen Medusa's younger sister?”

A boy from 21st century Earth, met an accident and later was reborn in Naruto’s Ninja World.
He is born in Uchiha Family and becomes the useless brother of Itachi Uchiha and Sasuke Uchiha…. Let’s see how he changed the Naruto world.

- Description from Novelupdates