Something funny about this series, but at the same time a little annoying, is how the anime has this "harem" type of situation (more clearly with Noel and Tsumugi, idk about the other two), when it's more clearer than water that Shintaro likes Towa and vice versa. Despite that, the series was a joy, and as you said, it's a little weird they didn't do more ecchi stuff like in episode one and two. Maybe they did that only to hook up people? Hahaha. Anyway, I enjoyed this series a lot despite being really simple. I want a season two!