I already posted a review in the original book release announcement thread, but I will post here again.
I really enjoyed this book, and that was mostly due to the fact that it was one straight storyline from beginning to end just like Hanafuda. I became more invested in the story and the characters with every single chapter (even though in my head I kept thinking this is a prequel to the residents of Tokoharu Apartments, I mean in Tokoharu they were in College here they are in high school...but I digress).
It was fairly difficult for me to pick out one particular chapter to call my "favorite", since it was all revolved around the Seikodo tournament arch, and I was counting it all as one giant story rather then individual chapters. The chapter that left the biggest impression on me was
Chapter 2. That mostly lies in the fact that in this chapter Kiyosato refused to let Hotaka be paired up with anyone else (even though he had an orgy), and after he had gallantly induced Asama into an ahegao blackout he still went straight up to Hotaka to finish inside her.
Aside from that chapter the Bonus short chapters were icing on the cake, and was a very nice surprise. The book itself had a lot of comedy scattered throughout and I did find myself literally laughing out loud.
Finally on a last note I just wanted to say best girl is Kiryuu Azumi Sensei.