A corrupted knight prince x a pure and alluring tentacle monster who just wants to destroy the world (one-on-one, gender transformation)
"Do good things for a guy and you die a dog's death?"
A wealthy young man dies with regrets in his previous life and is reborn as a pure and alluring little tentacle monster!
An evil source? A mission to destroy the world? Bound to a blood-sucking System: hurry up and find a gullible sugar daddy, cuddle up to him, and suck his blood for magic stones!
Target acquired: that blond prince!
Aelian: "Raise you? Can you supply enough magic stones?" Ilya (inner thoughts): Hmm... Barely acceptable. He's a bit stingy, though (eyes his pockets).
And so, the upright prince begins to fall: feeding her the most expensive magic stones, taking blades from every direction for her, and throwing every last principle out the window.
Ilya (counting magic stones): Hmm... Does he really want to give me his life too?