System Substitution Strategy, the Wet Ex-Husband Is Chasing After You

Ancient Sayings That Are Shocking to the Core

It's not funny, it's not a scumbag, the female (male) protagonist is not seriously ill, she doesn't cause trouble, and the storyline is wonderful.

Strategy Article! Strategy Article! Strategy Article! Systematic

Is There a Heroine Who Is Cold and Unlovable When She Is in Love, and Then the Hero Takes Advantage of Her by Force?

Are there any stories where the male protagonist lacks love and the female protagonist loves him very much but the male protagonist is always cold and in the end the female protagonist doesn't love him anymore and the male protagonist takes advantage of her by force?

Is There Any Strategy to Replace the Male Protagonist and Continue the Strategy If the Hero Fails?

The male protagonists have failed and want to escape. The next one is the strategy. The male protagonists wake up and think that it is good for the female protagonist if the heroine commits suicide (not quick travel).