Just view the project. In this video, the cat was introduced as "Miko," but you can change his name, as he is the main character. In the actual game, at least.
While the game will be translated with an online translator, I will tweak text if needed. For example, while the Japanese name translates to "Miko's RPG," I have shortened it. Now all we have to do is see to @yuinyanko releasing the game... Credit to @yuinyanko for creating MikoRPG and the original project.