Angry Harry and the Seven by Sinyk - Chapter 53 - Fifty Three – Four Twins

Usami is a beautiful classmate with good morals and top grades. At school, she views Sakuto as her rival. But when he bumps into her after school, he sees a different side of her. She was playing at an arcade after classes, and she had this innocent smile that one couldn’t imagine on her at school.For the sake of getting along with her, he gets close to her at school and then plays together with her after school. They each have their places where they can deepen their bonds, and at last…This is the start of a heart-warming love triangle romcom!

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

Kim Jeongjin, an editor of a publishing company on the brink of closing due to bankruptcy, ends up transmigrating inside a fantasy novel as the incompetent youngest son of a wealthy family.

And here he thought that he should live a rich life in this life…

“Why was I given a high-level skill? Don’t even bother!”

During the Third Great Ninja War, facing numerous enemies, Mirukawa Kaito was not in a hurry, and his hands quickly formed seals.“Water Style: Water Shuriken”“Lightning Style: Thunderbolt”“Ice Style: Ice Beam”“Lava Style: Precipice Blades”…Everything returned to calm.In the messy battlefield, Mirukawa Kaito fell into deep thought. He looked at [Focus Sash] on his left wrist and [Mystic Water] on his right hand.After a long silence, he threw the newly obtained [Onion] hard to the ground!“Damn! I am really a Pokémon, right?!”