The second story starts off where the first pick off; having Miku's conveniently-unrelated little brother come to her rescue sorta. Tomomi, the resident BITCH from series 1, takes advantage of him; as well as Koyuki.
Unlike Shintaisou Kari, this adult anime's done by a different company. So gone are Teruaki Murakami's art/animation style, that ugly rhythmic gymnastics teacher, and that one "come in your mouth" scene. The art is a little worse herein, but it's not so bad that it deters from the story and sex scenes.