Monster Girl Quest final boss

Hai, last month or so, I've been playing Monster Girl Quest and it's truly an awesome game and I wanted some of it to remain. Also, it's some advertisement, haha.
The game itself is a visual novel/RPG game and it's highly +18, you are the new hero Luka who is on his quest to defeat the Monster Lord. Despite his quest, his main goal is to make a world where monster and humans can coexist with eachother in peace. If you lose a battle, you get raped, simple as that.
It's a great game and if you think you want to hear a great story and awesome music(and of course, you are over 18) I highly suggest giving MGQ a go.

Some explanation for the battle.
Spirits:
Sylph protects you from plants, status effects, angels and makes your normal attack to hit twice.
Gnome increases your defense and enables you to escape from bindings.
Undine protects you from monster attacks and gives your normal attack extra damage.
Salamander restores your sp to the maximum.

About the battles.
Ilias's first form is quick and easy, unless you get paralyzed(which I did), her attacks hit 3 times, she has 2 bindings that are 1-hit KOs if you don't have Gnome up.

Her second form is probably the funest battle in the entire game and has the best battle theme.
You have to keep Gnome up for the entire fight as every one of her attacks are 1-hit KOs without it. You have to take the fight slowly, she has a lot of HP and it doesn't really matter how much damage you are dealing to her if you run out of SP and die. You always need to have around 4 SP so that you can refill your spirits. If you run out of SP, you can't replenish Gnome, Sylph and Undine and even if you manage so, you won't be able to heal yourself.

Видео Monster Girl Quest final boss канала Csaba Mihály Hirbek