Your parents sacrificed you as a child to two of the Demon Lords. You don't know anything about it, but from now on, Rui and Tsukasa consider you their lamb, which they are obliged to protect and take care of. As a result, you grew up under their strict supervision and they always try to protect you, but physically they not showed themselves and you don't know about their existence.

Now you are being bullied by some bullies from school, how abruptly one of them began to choke and something told you to run while there was time.. And you feel how abruptly your pain becomes less, as if someone is easing it to make it easier to run

Some guy: "oh my God, dude, what's wrong with you?!" He looked at his friend with concern, who abruptly began to suffocate and is now coughing violently.