Infinite Paths: The Raging Phoenix - Chapter 999: Small findings

Arthur got randomly transported to another world. Some people would find that terrifying, but not for him, who was tired of his old life; it was an opportunity.

And, after having bad luck all his life, the tide changed.

It was a world of magic where wizards fought side-by-side with their familiars. Arthur got summoned to be one of these so-called familiars.

He was furious. The thought of becoming a pet was not something he liked. Well, that changed when he saw who his master was.

A hot-woman. And, to make everything better, Arthur was inside the Frostpeak Magic Academy, which only had women students.

“This is heaven. All familiars are beasts, but I'm different. I'm a good-looking man inside a place filled with hot girls.”

When he thought his luck could not get better, he unlocked a system that helped him with everything. Of course, he used the system for a greater good, like getting girls.

What got summoned was the world’s strongest sociopath.

Residing within the dense forest in Nore are the beautiful elves of Elune Forest. After the young elves began to be hunted by the humans to become slaves, the Queen of Elune decided that young elves could not leave the forest until after their adult ceremony at fifty years old. When Hai’an’s ceremony finally arrived, he was excited to be able to finally travel away from his home and see everything the world had to offer. However, he got more than he bargained for.

What was supposed to be a simple ceremony turned into Hai’an transmigating to the body of… a plant?!

Stuck as a small sapling called Shaking Grass, Hai’an was bought and given as a birthday gift to a retired Starfleet Marshal named Auguste.

After retiring due to political conflict, Auguste spends his time trying to find more of his missing race, the ancient dragons. Unexpectedly receiving Hai’an, Auguste believes him to be nothing more than a rare, exotic plant. To his surprise, he finds that this little plant is intelligent and learns more and more every day.

How will this stoic, unfeeling dragon fall in love with the little transmigrated elf who lost his body?

- Description from novelupdates

Crossing to One Piece world, he became Roger’s younger brother.