MTL - The Day I Played with Ronaldo - Chapter 94 1st

Known as the country’s top onmyoji, Yuuma Kisaragi, who lived to the age of 99, awoke to find himself in an unfamiliar forest. A voice echoed in his mind, revealing that he had been reincarnated into another world at the age of 20.“Good morning, Master. Skip the greetings and please defeat the goblin in front of you.”The voice belonged to a skill acquired during reincarnation called “AI,” designed to assist Yuuma in his new life. When the skill, AI, took over the form of a golden-haired fox yokai, the familiar shape of Yuuma’s shikigami, he decided to embark on a new life alongside AI-chan.The onmyoji and AI-chan’s second life began, tackling various challenges and formidable enemies with the strongest spells and shikigami.

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.

Got roomed with another straight man in a love hotel and had to share a bed. Meeting by the road side on a certain day, the boy in his arms was smiling wildly.

Hey, let me explain myself, don’t go ahead of yourself. I was just being a samaritan. I had to help, even if I lied about being a straight man like you.

Are you running away after getting me excited? Let’s see what kind of ending you want today.

Since you all asked for a wife chasing crack, then let’s perseverate to the end. I’m not crazy, you are the one who is crazy. This is probably a crack but still gentle gong and a shou fighting against the crack story. Lighthearted! Comedy! No brain cells will be lost!

- Description from Novelupdates

Our protagonist Caam is a man from Earth that was reincarnated into this world as a demon. In order to survive, he spared no effort in avoiding the sparks of battle and without noticing it, he became strong himself.