Help with anime villainess (1 Viewer)

[smarteen]

Arecent anime with villainess that rides nude on mobile suit and she attaches her self with tentacles, when she fought the protagonist he managed to open her cockpit and she tied to attack with her tentacles but he decapitated her, does that Ring any bells

 

[Tiberius17]

Finally found it, that’s Nihilo from Ishura. Never watched the anime but that scene stuck with me as well!

 

[OTangent]

The manga version offscreens her death and doesn't show her corpse in the aftermath which is a shame.
Also, I recall reading that they have revived her in recent volumes of the light novel.