All the Heroines are my Ex-girlfriends - Chapter 30 - : Aki Tomoya: Everything is ’Smooth Sailing’

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

He praised her, “Wifey, you are a genius!”

A man is reborn into the world of Avatar: The Last Air Bender as a waterbender from Katara's tribe. Best of all, he was the same age as her, and he had a system with him to help.He knows the future and a system that lets him continuously get stronger by completing quests or long-term missions, as well as giving him the ability to copy abilities from others for himself. He will become invincible in the world of Avatar, even more so than the Avatar himself.

David rarely interacts with women in real life other than his older sister.However, online, he has a virtual girlfriend who wants a more serious relationship.When his virtual girlfriend claims to be a lady from the Rothschild Family, he begins to wonder if his life will be okay from now on.