Chocolate and vanilla are not butter. "Chocolate and Vanilla Vol.0" is the prequel of "Chocolate and Vanilla".
The name of this game is "Nekopara", also known as "Chocolate and Vanilla". More people still affectionately call it "Fuck Cat" ~ This work can be said to be the most successful at the moment "Global" butter, most butter may be limited to Japan or China, but Nekopara goes beyond the island country and into the world.
Basic introduction to Chocolate and Vanilla
Chocolate and "Vanilla" were originally virtual characters created by Pixiv original artist Sayori. This work was originally a comic and was later adapted into a game. The derivative work "NEKOPARA" is a series of love-themed visual novel games produced by NEKO WORKs.
Minaduki Kashou left his hometown where he ran a long-established Japanese confectionery shop and decided to open his own cake shop "La Soleil" as a pastry chef.