Harry Potter (Harry/Andromeda:) Postwar healing romance after the loss of Andromeda’s husband Ted and her daughter Nymphadora. Wedding night lovemaking and impregnation.
My Hero Academia (Midoriya/Uraraka:) Midoriya fucks Uraraka like a whore and pays her with an engagement ring and a marriage.
Game of Thrones (Jon Snow/Missandei:) An after costume party those two have drunken sex in the living room which leads Jon to impregnate his best friend.
Bleach (Ichigo/Halibel and her fraccion): After Yhwach is defeated, Ichigo finds and rescues Halibel from from the Quincy dungeon. Months later the arrancer ladies want to “thank him” with sex. His girlfriend orihime is very kinky and not only approves but she wants to watch. (She is always setting up girls for him to bang. Sometimes she gets involved.) Ichigo happily accepts!
The Witcher (Yennefer/Original male Characters): Yennefer needs an ingredient for her experiments and in exchange is willing to do anything. Yennefer just didn't expect the negotiations to go south and as a result being fucked in front of everyone at an inn. She also didn't expect to be mistaken as a whore and paid for by others either.