The game is still very early in development. The initial release was just a little over a month ago, and it's still in the proof of concept stage. A lot of areas aren't in the game yet, like the office. I'm working on adding as much as I can, but I'm just one person and being a hand drawn 2D game, it takes a lot of time and work to add content into the game. Mirai only appears when she has something to sell right now. I'm working on adding a way to replay one-off scenes, but for now, you can only her scene one time.
I'd like to be able to hire people to help develop the game faster, but that entirely depends on how much support the game gets. If you'd like to support the game, you can check out the Patreon or can make a donation here on Itch by paying to download the game.