Review (5/5): Weird sponge but otherwise great
Brush + Case + Sponge:
The Kabuki brush is a little bit long for my taste for being a travel size brush, but it is still much smaller than a lot of other travel size kabuki brushes on the market. The case is cute but a little bit heavy. I hope in the future the company will consider making it lighter and thus even more portable. Some people might like the substantial feel though. The sponge (is it a sponge?) that came with the case is pretty confusing, as it is not a conventional size nor texture for these sorts of makeup. I don't use it as intended. Instead, I placed it directly on top of the foundation to serve as a cushion when I'm moving around to prevent the foundation from shattering.
Foundation:
The foundation itself is pretty great. It doesn't feel grainy on skin and helps even out my complexion without drying my skin. I have light to medium Asian skin tone, and the shade Supernatural works just fine. It is slightly lighter than my skin tone when I'm tanned, but I only apply it around the center of my face anyways, so there is less concern about blending to the neck to begin with. I might try a shade darker if I get tanner in the future.
I use a brush to apply the foundation and have it settle into my pores before I apply another layer on top with my own sponge (purchased from Muji) to give more coverage if needed. When I'm on the go, skipping the brush step is usually fine. I can sort of squeeze my sponge into the designated slot.