For the most part, just go on his quest to beat Ruvin. But right now, the tanuki doesn't have much till the rest of the characters that are apart of his job are finished being drawn. But doing this will unlock more content with Trald and Gen, while also allowing you to meet more characters, and the next update will bring more.
Someone answered this question down further. Just need to get that rng luck to find it when you're there at the right time, but I did increase the encounter rate.
Sorry for replying late.