MTL - Marshal, Please Calm Down - ~ Chapter 200

After Reincarnating into Naruto World at the Warring State Era as an Uzumaki, Masahiko thought that he got a useless System. He lived for 48 years as a normal, below average Uzumaki Shinobi.

That changed when he finally knew how the system works the day of his 49th Birthday!

- Description from Novelupdates

One day, fate played a cruel joke on Fujino. When he woke up, he found himself in the world of Detective Conan. Now, he’s a high school detective with no parents, a four-story building to his name, and a barely sustainable career solving cases.Just when he was at a loss for what to do, a Professional System suddenly activated, allowing him to acquire real detective skills—through pay-to-win mechanics.From that moment on, he ditched the usual “Conan logic” and became a true rational detective, using real investigative techniques instead of convenient anime tropes.Q: Why do you, as a detective, know so many different skills?Fujino: Well, isn’t it normal for a professional detective to actually learn professional skills?

A single beam of light could annihilate the world, a single blade of grass could sever the stars.Shen Qing transmigrated to a magnificent universe where immortals and mortals coexisted, becoming a lowly hunter.With the help of the Water Ink Panel, Shen Qing could endure the refinement of Qi-Blood and cultivate a hundred techniques.A technique, after a thousand hammerings, could border on art, and an art, after a hundred refinings, could border on Dao.From the common Bow Technique of rural hunting, to the Sky-Patrolling Sun Shooting Bow Technique;From the Nine Skills, which nourished and trained Qi and Blood, to the undying Six Paths of Reincarnation Technique;From the outward release of strength in Wind Defying Finger, to the Qi that suppressed mountains and rivers with the Eight Desolate Annihilation Seal;From enduring the refinement of Qi-Blood, he embarked on a difficult path of seeking Dao; to commanding the skies, with the divine might as if overseeing a prison, having mastered the balance of the six realms.It was only when Shen Qing looked back that he realized he had unwittingly become the supreme ruler above ten thousand Daos, an unparalleled True Monarch!

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.