MTL - Butterfly and Whale - Chapter 17 tattoo

Anyone who could construct a stable Spell Model could become a Wizard — that was the Wizards’ ultimate secret! Having been given a new life as the son of an aristocrat and armed with a super quantum computer from his past life, Spell Models came as easily as breathing to Merlin. With this overwhelmingly huge advantage, would Merlin become the greatest Grand Wizard of all time?

- Description from Novelupdates

Xueyue's life was filled with nothing but unfortunate events. Her mother died giving birth to her, her father abandoned her for another family, her stepsister stole her beloved, and she was framed for a murder she didn't commit.
Sentenced to death by beating, Xueyue thought her horrible life would finally end.

Baifeng had signed in Naruto World for three years and reached the sixth level, just when he thought he could finally be salted fish, kick the dance king, and punch Kaguya.

Ding, you have been selected and invited by the Tiantian dimension chat group, do you want to join?

No, no, I’m already at level 6, so I just came to the chat group.

The beautiful monster princess: Although I lost a good chicken, the monster girl is really good.

Dagu is not Dagu: As a partner of justice, it is our duty to maintain the peace of the universe.

I’m your father: Kulala, I’ll show you a hand-torn black beard to cheer you up.

Bai Feng: This chat group is a bit indecent.

- Description from novelbuddy

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.