I wish I could work at Marina Square and have this on a daily basis! Kohi-Koji is tucked away at Emporium Shokuhin and their cakes are freaking awesome. I tried the Opera Cake as well as the Baileys banana cake and they were over the top! Don't forget to try their cream puffs at just $3.20, you get a sweet treat that is way better than beard papa or any other Japanese confectionary that churns out cream puffs. You can even spot the vanilla beans in the cream!
I also recommend you to try the sausage rolls thanks to @tiara_star for the recommendation. The sausage roll has cheese sausage wrapped inside! 😱