S2)We see Ton-chan frequently, when the story takes us up to the Keion-bushitsu (clubroom). What is unusual about Ton-chan in the anime? - The K-ON! Trivia Quiz - Fanpop
nakano azusa and ton-chan (k-on!) drawn by reki_(tiny_fin) | Danbooru
S2)What species is Ton-chan? Quiz Results - The K-ON! Trivia Quiz - Fanpop