Tower: a type of PvP area. You have 12 stages to beat and get corresponding rewards;

Portal: the place for Event missions and Daily missions;

Explore: exploration is another way to gain items and Memory Fragments. Here you use the girls you've unlocked to go on Explorations;

Room: this is where you can Increase the loyalty and skills of the Monster girls you've unlocked. You can also check what Monster girls are still locked and the requirements for unlocking them;

Arena: the main place for PvP combat. All combat here is automated;

Story: This is the main area of the game. Here you will fight through Stages to unlock certain content, along with some Monster girls.

There are a couple icons that can show up from time to time, on the top left-hand side of the screen:

Bonus: This is where you can collect bonuses from Ranking up and/or get your Daily Rewards from the Monthly Cards;

Secret Shop: The Secret Store shows up randomly after completing a Story, Portal, Exploration, Arena, or Tower Battle. It can only appear 3 times a day. It resets daily at 05:00 EST, and will remain open for 1 hour before having to be summoned again.