Alice Escaped - Playthrough Part 3

Clearing Dodo's cleaning quest earns you a heart fragment and the location of Cheshire's hideout. There you can ask her to return Usada and Kotora to their own world and surprisingly she will oblige. The two girls return to the library, but their mission of finding Alice is incomplete. You get the "Where's Alice?" Ending number 5. Loading the game returns you to the checkpoint right before you talk to Cheshire.

Found Usamura-san behind an ability-locked door (meaning you have to have a certain upgrade to go through) and he gave you an area clearing quest. The reward is a heart fragment. From time to time Cheshire may want to speak with you asking different questions. I guess this quest ends when you exhaust all dialogue options.

On the gameplay side of things I bought an upgrade allowing me to dash twice in the air, which makes platforming much smoother. Two more useful skills I got are the abilities to see heart fragments and ability crystals on the map. Combine those and it's much easier to develop you characters as you wish.

Eventually I got to fight 2 King Card bosses at once. Despite all the upgrades I had they can still kill me in 2 hits. Thankfully they are slow, so utilising Kotora's gun while staying at a distance is the best strategy. Jumping at them is ineffective. When you defeat them you fall through the floor and into the castle where Alice is supposedly located.