Naruto: I'm Nine-Tails and My Host is Kushina - Chapter 84

A man reincarnates in the body of a boy who suffered a tragedy, only to realize that he is in the world of My Hero Academia. What's even stranger is that his quirk seems to have the abilities of Nen and Haki.

On a certain day, Xu Xing suddenly received yin-yuan eyes; he could see a red string between lovers. Then he discovered that he had a tight connection to his own left hand.

Xu Xing: I TM …… will I be ‘solo’ for life? : )

The second day.

Xu Xing suspected that he had seen a pair of ‘gay’s. The left side of the boy’s body had two red strings. The one in front was tied to his hand, the one in the back was tied to the boy’s right side.

The bottom of Xu Xing’s body suddenly tightened. Trembling in fear, he turned his head — only to see his ‘local area’ connected to a red string tied into a beautiful, intimate bow that was attached to the school grass sitting behind him ~

Xu Xing: Excuse me???

- Description from Novelupdates

[Woman disguised as a man + Shuangqiang super pet] After thousands of tasks, the system is actually poisoned? Clean up the virus, but also bind another system? !

The prosperous and prosperous heartthrob system is being launched, and the gender is being transformed. Please prepare the host for the female supporting role!

Luo Bai: What if I really want to kill it? 【Smile face】

Xiao Mi Mi: My host is so cool and madly dragged to the limit that he really wants to hug his thighs, but he is always disliked and swollen? !

Also known as: “The whole world is crazy about me”

Or also known as: “How to uninstall the heartthrob system? ! 》

Or also known as: “The system asks me to disguise as a man every day to seduce women”

- Description from novelbuddy