Exams have a special ability that nullify all moral boosts just like last bosses... Or maybe it's just my moral being at level zero except a few moments...
I actually thought of playing it for a long time, the only things that stopped me from doing that are no voices + too little time right now to play... like a boss... Oh, and a bit of VNs in list standing before it didn't help too...
Shine, do you have the updated version with the Tokuten? It has already been shared in this site, but all the other links seems to be unavailable. 恋妹SWEET☆DAYS