@Rauvi, the blue-haired girl is, at a minimum, allowing the redhead to get off with part of blue's body and at most is actively tailfucking the redhead. Either way, in what universe is that considered masturbation?

I would consider both of those scenarios to be masturbation based on Exusiai having her hand down her own panties. If she's using the tail to masturbate or is stimulating herself while the tail is penetrating her, that counts as masturbation. And it looks to me like one or the other is very likely happening here.

So guided_penetration or guided_breast_grab is also masturbation?

Arcana55 said:

@Rauvi, the blue-haired girl is, at a minimum, allowing the redhead to get off with part of blue's body and at most is actively tailfucking the redhead. Either way, in what universe is that considered masturbation?

@Arcana55, the same universe that allows penetration from an outside source while stimulating oneself simultaneously. So all of them except the one in your head.

Arcana55 said:

@Rauvi, the blue-haired girl is, at a minimum, allowing the redhead to get off with part of blue's body and at most is actively tailfucking the redhead. Either way, in what universe is that considered masturbation?

All of them, given that the definition of masturbation is: "Excitation of one's own or another's genital organs, usually to orgasm, by manual contact or means other than sexual intercourse.