The Side Character’s Hidden Boss! - Chapter 17

He, since childhood, had followed the Foreigner to practice the Defying Heaven Art, entering the most secretive special forces and becoming a fearsome assassin that made others tremble at the mere mention of his name. After a single failure, he took early retirement, but he ended up as the personal bodyguard for a rich heiress, a school beauty. Accidentally provoking some mysterious Cultivators, he gradually unveiled a hidden world of Cultivation beyond the mortal realm...

This is a reincarnation/isekai story, about Matt (later TreeTree), an overpowered tree in a fantasy world that serves as the battlefield for an ongoing conflict between demons and the heroes summoned to oppose them.At first a bystander, over a long period of time, TreeTree will learn all sorts of skills, gain levels, and in doing so, build up a forest, train young subordinates, protect a village, and more.

Kusumi Chiharu gets a message one day that he has been selected as a Monster Tamer, and he is prompted to select his first partner. He thinks little of the message until he receives a giant package the following day. He assumes it’s the porn books he ordered, but the huge box ends up containing the unconscious body of a near-naked girl! She’s a ghoul named Zonmi, who intends to fight beside him as his partner.

However, it turns out that other hot girls at his mostly-male high school are also magical entities, and Zonmi may not be the only one who wants to fight by his side!

Shiro Sakamaki was reborn into a new world with one simple goal: to live a peaceful, luxurious life free from drama.But when he transfers to a prestigious high school in Tokyo, he quickly discovers that his new reality is anything but ordinary. The city is a strange mix of supernatural forces, ghostly phenomena, and events that feel like they’ve jumped straight out of an anime.Before long, bizarre occurrences follow him everywhere, along with a series of beautiful, mysterious girls—from the arrogant, blonde twin-tailed exorcist, to the mysterious quintuplet sisters, to a passerby heroine with hidden powers.As Shiro gets tangled in the supernatural chaos, he realizes he’s at the center of something far darker. Cursed relics begin to surface, and Ancient, Evil Outer Gods—whose very presence bends reality—start to stir.Now, Shiro must figure out why he’s caught in this web of strange occurrences while trying to survive school and the surreal new world he’s been thrust into.