You need to play the VN to understand the story, or at least watch this anime from D.C 1. A lot of cameo came from another D.C series that which one is Sakura. Sakura in D.C III maybe will confuse you, but if you watch D.C II you will understand why is Sakura come to future and playing with Kiyotaka. Great ending song especially "Aitai yo (会いたいよ)" by yozuca* (eps 1, 9-13). One of great song for D.C series. The VN itself need 50 hours to play, hope you can play it (yes of course)*there is H scene btw ( ͡° ͜ʖ ͡°)*ukhuk. I loveto play Himeno route *btw I have play all route but idk, I'm just fell in love in Himeno route, but if you want a real romance route with a lot of drama, you can choose Rikka route as well :D Just up to you. I'm sorry, I'm not good in english, I'm from Japan, thanks for reading my reviews, hope can help you :D