HELLPP I FORGOT THE TITLE OF THIS MANGA I SAW ON TIKTOK

I first got this video on my for you page I thought it was an anime cuz it looked like your typical wholesome anime intro!! But it wasn't an anime it turned out to be this hentai manga thing??im so bad at explaining things. All I remember from it was this wholesome looking guy saving this woman at the beginning but then just ended up....doing her after the fact that's all I can remember I think the guy had red hair maybe