Tenga is a classmate of Chidori's. When they first become involved in the Kiznaiver experiment, they barely know eachother, but Chidori sees Tenga as a shallow person mainly because of his brash personality and the fact that he pointed out that she has small breasts. After he starts living with Katsuhira, he and Chidori spend a bit more time together, and although she acts like she is annoyed that Tenga is getting to comfortable in Katsuhira's home, it is also shown that she is happy that Katsuhira thinks it is fun to live with him. It is shown that she cares for him multiple times, like when she makes a meal for him in the first place when bringing Katsuhira dinner (much to his surprise), or when she brings a bandage for him to cover his scar too. They are now pretty close and he is probably the second character (after Katsuhira) that has the most interactions with her, and once he discovers that her feelings for Katsuhira still remain, he becomes her "wingman". Although Tenga develops feelings for her, he still continues to aid her in winning Katsuhira's affections. Although he helps her with Katsuhira, it is shown that he is jealous that she likes Katsuhira rather than himself, even to the point of taking his anger out on Katsuhira and punching him repeatedly. After he admits that he likes her in front of all of them, Chidori seems shocked.