A long while back I saw a clip for a hanime and its been on my mind ever since. I havent been able to find the souce but some details stuck out to me.
1: there is a Purple haired woman named Manaphy
2: The characters were speaking English
3: She has sex with a brunette man that calls her name often
4: she's sacrificing herself for some greater purpose.
I very much appreciated if anybody could end my decade long search.