In Naruto with the Flame-Flame Fruit - Chapter 43: - – Date or Duel

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

Aaron, a wildlife biologist, became a military strategist right after a global war between nations began.He never wanted to participate in the war but he had to, because he wanted to continue his studies on endangered species the moment the war was over, but to his surprise, everyone in his unit were killed, including him, and the next thing he knew, Aaron woke up in the body of a young noble having a similar name to his.However, he also noticed he had awoken in a world different from Earth.In this world, demonic beasts ran rampart with only one thought in mind, causing them to feed on anyone they see, be it humans, elves or even magical beasts as well.During his first encounter with a magical beast, Aaron awakened a system which allowed him to bond with magical beasts and to obtain terrifying abilities from these bloodcurdling magical beasts, so he used his experience as a wildlife biologist to help make it easier for him to bond with these beasts.However, Aaron also noticed he could evolve these beasts if their loyalty towards him had reached a certain level, so he vowed in his heart to grow strong enough to protect those he cared about in this world with the hope of living a happy, peaceful life where he'll be able to focus fully on his passion as a wildlife biologist.

After getting hit by a truck, Hayate Kurogami experienced something bizarre. He arrived in alternative world and awakened as Kaiju Maker.Unfortunately, he was forced to leave this world.Sacrificing himself for goods, Hayate reincarnated to another world.A cultivation world filled dangers and charming beauties.Watch our protagonist become stronger, adventuring the vast universes to achieve the highest realm.1st World: Against the Gods

Lin Li has transmigrated into a cultivation world. People here all lead an ordinary life in spite of their possession of super power.With no talent in cultivation, Lin Li decides to quit the rat race. However, he wakes up to a mysterious island and a tree that can produce power-enhancing fruits.“Wait a moment, let me eat the Superpower Fruit in my hand and awaken a Superpower, then I'll talk to you...”