This "simultaneous isekai as cute girls" is kind of nice at 625 chapters... the MC's Tohsaka Rin persona ate Goetia and then turned the 4HGW into a battle between beasts, well, there was still a grand saber and a gilgamesh. Final boss is her own Ereshkigal who turned into beast too, who let her kill her through the power of friendship lmao