Well, made through half of the update, and took some notes of the order and progression, no luck when it comes to sidegirls yet but I believe it might just be not enough affection points
Heart of Gold is a chain from Curry Night which happens when you call chika on a weekend afternoon, might be Tsubasa affection locked
Our Time Atop This Mattress, just visit Chika in her room after Curry Night
Playing God is where you go on the weekend to see touka do archery
Yuki's events become easy to get once you call her friday night along with sara's
a brutal, violent creaming happens on wednesday when I think you have done a certain event not sure which