MTL - One Piece: Wudang Baiye, Deputy Captain of the Straw Hats - Chapter 18

On Blue Sea Star, there is an extraordinary group of people who control all kinds of incredible power through armed cards. They are called Star Card Masters.

Su Yuan came across, and he also carried a system that can strengthen his own star card.

Transformation Realm Enlightenment Soul Card Complete Awakening = Top Qualification Soul Card [Phoenix of the Blue Sky]

Consummation-level popular walking step: avoid certain long-range attacks!

Perfect level Cang Yan Strike: double Cang Yan Strike!

Consummation-level metamagnetic heavy pressure: heavy pressure field!

Consummation level air cut: break the boundary line!

Perfect rigid flame finger + perfect hardened iron coat = golden hand!

…

Su Yuan started from strengthening the initial soul-initiating card, step by step to the ultimate realm of Star Card Master!

- Description from novelbuddy

There was a Senior Brother and a Junior Sister. One of them was transmigrated to this world and had cheats while the other was the reincarnation of a Great Emperor.

I became a professor in a game by accident. To make matters worse, I even messed up the difficulty settings. Now, I’m stuck playing on Hell Mode. A world on the brink of war with the Demon King. An Assassin Department where mu*der is legal… as long as you aren’t caught. I thought I’d have to claw my way through just to survive in this wretched place, and that was the case at first. But nowadays… “No matter how hard I try, I can’t be like you, Professor… How do you do it?” “Please… become our god.” “What do you know? What is it you know? Why do you make me want to live…?” One by one, everyone at the academy began to obsess over me.

“Impossible… Why are you not following my orders!? Clearly I sucked your blood, why!?”

On the very first day of high school, the youth subscribing to the philosophy of “absolutely ordinary everyday life,” Kujou Hisui, encountered disaster head on: He was attacked by Rushella Daamu Draculea, the vampire who had lost her memory. Rushella was greatly intrigued to find her vampire powers ineffective against Hisui. Not only did she make Hisui’s home her own, she even enrolled in his school to stick to him–

Hisui had no choice but to help Rushella regain her memory. But before one crisis could be resolved, many more had risen. With tempting advances from the mysterious Sudou Mei, and kidnapped by the girl from the Supernatural Investigations Section in search of Rushella, Hisui’s ordinary life has been replaced by its complete opposite, drama–

Romantic comedy and supernatural action in a school setting!