The Lengendary Child is Too Strong

I awakened as the world’s only legendary ‘card collecting child’.
I gave up on receiving the love of my adoptive parents from the beginning.
‘Let’s not focus on the impossible.’
Instead, I gave my heart and soul to the heroes summoned from the cards and stayed by their side.
Because they would never betray or hate me.
Because they were unconditionally on my side.
They became my family.
“The reason I became rich is simple. It’s Chaeri.”
… … Hmm?
“Why are you sick and making a fuss? I’ll make an elixir because it’s annoying.”
If I make that on Earth, there’ll be a war.
“Unifying Earth through armed war wouldn’t be bad either. Would you like me to take control of the world?”
Big Sister Heavenly Demon is dangerous.
If she does it, she will really do it for real.
-Turtle!
Turtle, don’t agree! Don’t say “I like it!” Don’t put a heart above your head!
***
Chaeri had to prepare for the apocalypse that would come one day.
So she helped the main characters in the original story grow and grew together.
“That’s right. I’m the male protagonist. Because you taught me that.”
“I don’t care about things like the end of the world. I just need Chaeri.”
“I said I’ll do the dangerous stuff. Why are you driving people crazy?”
The personalities of the main characters who are supposed to protect the Earth have changed strangely. A lot, too much.