The issue with symbiote girls is what do they bond with? There's three options, only the last of which is acceptable:
- 3DPD. You're still fucking a human girl.
- Another monster girl. This decreases the quality of said girl, plus this might make you a haremfag.
- Yourself. Either you get a full-body symbiosis and get hugged from all over (but you can't hold her in your arms without holding yourself, or a partial one, like just your hand. It'd be like Parasyte, except that instead of being a cold muderous monster your hand is now a waifu. So it'd be like a monstergirl version of Midori Days. inb4 "my hand is my girlfriend" jokes.