/jp/ - Otaku Culture

Eirin would probably be the best all around. Her skills as a doctor and knowledge of anatomy would absolutely translate into giving some phenomenal orgasms. Not even going into any drugs or aphrodisiacs she has access to.

Byakuren would be a runner up. In the situation she's actually having sex you have a chance to break a dam holding back some 1000 years of sexual repression. The passion that would flow out of her would be unending as she falls into lust.

Other misc hags (Kanako, Maizomu, etc) slot in here, nothing too much to make them stand out compared to the two above.

Yuuka would be similar to Byakuren with the lust dam but to a lesser degree. I suspect she'd lean more into femdom when she gets in the mood though, and at your expense it may not be gentle.

Yukari in concept would be great because gap play but in reality she would probably get bored halfway through because that's just the kind of person she is. Although there is the potential for Ran tag team, who would be much better at sex than Yukari.

Yuyuko without a doubt would be worst. Dead fish tier.