I want to see the alchemy shop but I can't because I'm not a zombie ... my question is how does one become a zombie on here? 0.o

during february, around valentine's day, subeta has a holiday called survival during which you can be 'infected' with a zombie strain. once it has progressed to its final stage, you can unlock the skin in your wardrobe so you can put it on or take it off whenever you like. you need to be wearing a zombie skin to access certain parts of the underground, namely the alchove.

is there a way to buy the skin to unlock it early or is the event the only way to getz it? just curious ... I lovez your outfit btw ^^

You can use one of the zombie vials to temporarily turn into a zombie (the stages progress pretty quickly, so it shouldn't take more than a few days). You'll be able to visit the alchove for a while in the middle. List here