Identify [Solved] Find a h-game that recived a an anime adaptation

[Camors]

So, I saw this hentai that had a purple haired girl with pigtails that is follow by a very similar girl, but this another girl is actually a sword spirit. The lore is that the first girl was about to be killed when it was saved by this sword, I think, and now the two travel together. Looks like the game have a mechanic to fuck to get upgraded. I didn't watched the anime adaptation too much, but i searched and found this game that the anime was based on, and i wished to play it, but for some reason i didn't downloaded it the day, and now i have forgot the name, so if anyone know of what game/anime i'm talking about, thank you

 

[Camors]

So i was looking for like half a hour when i posted it, but five minutes after i post i found the game on google, and it was Knight of Erin