The Ruler Of Darkness - Chapter 25Book 6:

It has been more than ten years since he was transported to another world. The protagonist Deris Fahrenheit, who has became a magician with special circumstances, was freely enjoying his life in this world. However, a girl appeared before him and asked him to make her his disciple. That girl seems to be a transported person――

It’s a story of him who becomes the girl’s teacher and trains her to achieve her revenge (?) in otherworld.

I claimed to be better than the MC. An Eldritch entity decided to put my claim to the test and reincarnated me into the world of the novel I read. But, I’m not alone. There are five other reincarnates?

Wait, wait, wait! Why is the MC a regressor now? That wasn’t part of the script!

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Dear readers! Without any ads, maybe you will prefer .

As a walk-on, he had been the mistress of his sugar daddy for three year. However, they only had met each other for a few times.
As a boss, his sugar daddy had tons of lovers.
The walk-on: The cake shop is the only thing I love in this world. Lovers? Never want one.
The boss: No problem. Nobody wants that.
Then, they fell in love with each other…
Shameless playboy x heartless rogue
1v1, this is not a decent love novel.

- Description from Novelupdates