My Only Thought is the 34th episode of Chihayafuru.
As Arata has a brief run in with Shinobu, who believes team tournaments are for those who don't love karuta, Taichi becomes worried when he learns the team Tsutomu scouted consists of five Class A players. As Arata tries to find the right timing to approach Chihaya, Fukui West, whose three-man team is short a member due to traffic delays, drag Arata in as a stand-in, made more difficult when he is forced to take his glasses off and wear a face mask so he won't be found out. Although one of Fukui's team members lose, which automatically results in an overall loss, Arata, remembering his time with Chihaya and Taichi, decides to put on his glasses so he can play seriously til the end, bringing the score to a more modest 3-2 defeat. However, following the match, Arata's old teacher who was supervising the match catches him, saying he may be barred from participating in the individuals for breaking the rules.
Poems of the Episode
In order of appearance: