Counterattack System appeared when I'm already At The Mahayana Realm - Chapter 745 - 744: The Ideal Human Emperor (Extra Chapter for Alliance Leader’s Immortality)

BL manhua artist, Ti Xiao, has been single for many years. As such, he is under constant pressure to find a partner and get married. His family’s little niece shipped him together with her school’s English teacher to form a CP. The editor at work also want to introduce their friend to him. One day, a new neighbour moved in next door. He couldn’t help but notice that he seemed kind of reserved and cold. After getting a glimpse of him, he was ready to make trouble. He used his numerous ninja skills to discover his new neighbour’s identity. It turned out he was the English teacher at his niece’s school! Not only did he like his work and was his fan, but he was also his editor’s friend!

- Description from Novelupdates

Suzumiya Kaede, a gamer, fell asleep while playing a game all night and when he woke up he found himself in another world, a fantasy world where using magic is possible! Using his knowledge of games, skills, and cheats, Kaede decides to enjoy as much of his new life in a different world through his newly-acquired magic and sword!

Hua Jing was on top of the world. On the day she was to receive her Lifetime Achievement Award, she was involved in an accident which made her go into a coma.When she opened her eyes, she realized she was not in her original world but a world that was very unfamiliar!As soon as she opened her eyes, someone said by her ears, “Young miss! You are finally awake! Thank God. We can now begin preparations for your honeymoon!”Hua Jing was surprised.Honeymoon? What honeymoon?She was a proud single woman after that idiot Xu Ming had cheated on her so there was no way she could be married!When her senses fully return, she realized she has been transmigrated into a different universe and she truly has a husband and what was more surprising, her husband has six more wives!What a cheater!She clicks her tongue as she chases him away on the date he was to spend the night in her chambers!Her maid quickly shouts, “Young madam! You cannot treat the Prince of the Kingdom like this!”Prince? Did she just say Prince?Hua Jing is confused. She desperately wants to go back!When she finally sees the Prince's real face, she realized he resembles someone from her other universe!Isn't that her enemy number one, the big star Fu Jing Rong?Oh Lord, how could that unreasonable man be her husband!Unacceptable! Totally unacceptable!...My work is participating in a Contest. Please support by adding to your library.

Crossing to One Piece world, he became Roger’s younger brother.