[Sesshomaru] Slept with His Scumbag Father's One True Love

A random idea.

Togaou is on the verge of death after a duel with Ryukotsusei, and is rescued by the heroine, who has run away from an arranged marriage.

By a twist of fate, Izayoi, who happens to be passing by, takes him into her home and carefully nurses him back to health. Togaou mistakenly believes Izayoi was the one who saved him.

As they spend time together, he is drawn to Izayoi's gentle, dignified nature and gradually falls for her.

By chance, Togaou discovers that the heroine was the one who saved him, and develops a special affection for her.

To escape her family's coercion to return home and marry, the heroine decides to bind herself to Togaou.

Sesshomaru sees his father fall for someone else and neglect his mother, so he makes trouble for the heroine at every turn.

Due to an unavoidable circumstance, they do something unspeakable.

In the end, the heroine discovers that Sesshomaru is actually the person she was supposed to marry.

I'm too lazy to come up with names, so the leads have the same names as in my previous work.

I don't know when I'll start writing this, or if I'll ever start at all.

Theme: That heart-skipping moment when you meet someone.