21st Century Necromancer - Chapter 727 - 723 Copying Books (Seeking Subscriptions, Seeking Monthly Tickets)

She spent the night with the man who destroy her country, fleeing with their child in her arms. With that, she believed their relationship had come to an end. “Even if he’s another man’s child, even if he’s not of my blood, or even if he’s the child of a bastard, I’ll raise him as my own.” Until he came to her with eyes as ferocious as a beast. “Don’t even think about running away using the boy as an excuse. I’m still struggling to control the urge to crush the little creature that took you away from me.”

He was a wealthy and mysterious financial backer who had appeared before her when she needed money the most. After the courtship, she took the money and left.

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

- Description from Novelupdates