Go Nagai's Lovely Angel 2.

‘This is a visiting soapland service. How about you try our Ultimate Bliss Course?’ The mysterious soapland girl, Lovely Angel, who brings happiness to the unfortunate through climactic sex with a ‘happiness effect’, has returned! And now, another mysterious figure has appeared: the travelling SM girl, Black Angel, who challenges Lovely Angel! What will be the outcome of this showdown between ‘Lovely Angel’ and ‘Black Angel’?