Actually started as one oneshot with Pure Love Strip, and then Doting Love Strip & Lavish Love Strip were released as well.
Story 1 - Pure Love Strip - Yuuko is being taught something other than school work from already perfect Ryunosuke-kun... Yuuko is in her third year in Junior High (freshman in high school in US). She is a glasses wearing... four eyed nerd. She's suddenly getting tutoring from perfect Ryuunosuke-kun, but that is not the only thing that Yuuko is getting tutoring for... Yuuko's dangerous summer hoilday is about to begin!
Story 2 - Doting Love Strip - The continuing story after Pure Love Strip. After their first time.. he has started wanting it... every day!?
Story 3 - Lavish...