I already feels there's something fishy start from the time Kuro gave Hotaru the rules, but I don't know what. Then my suspicions increased when I saw the last scene in the first episode, but I still don't know what the goal of this series except to help Hotaru settled her lingering regrets. As the episodes goes by, comes out more clue here and there, and I feel more like I watch a detective series than a romance, because I try to gathered the clues and makes a conclusion (^_^)

Finally I get the clear image of what's going on when Hotaru settle her lingering regrets with Ren. Truthfully, I never imagine that kind of twisted plot, but that's very interesting and touching! And the ending is somewhat between sweet, happy, bittersweet and heartwarming ending.

This series, even though just contains of 6 episodes with an average duration of 20 minutes for each episode, really can tell a story without leaving unspoken details. The story goes with the good speed, not rushing and not slow too, so that you'll feel comfortable watching it.

I watch this because I want to see another cast by Koseki Yuta and I'm not disappointed with his acting in this series ( ´ ∀ `)ノ～ ♡ But, not only him, in my opinion, the other casts' acting are superb too, they really know what they should do and have a good chemistry between each other.

The musics, whether it's an insert song or the soundtrack are great. They are really suitable to accompany this film.