Daichi's feelings for Najika gradually become stronger, and in volume four he comes to the realization that he has a crush on her. In the following chapter of the manga, he overhears a conversation between Najika and Akane Kishida where Najika tells Akane that she has feelings for Sora, and that she intends to tell him how she feels after the cooking competition she is currently competing in ends. This causes Daichi to become jealous.
He has 'low sense' of love, and it takes Sora asking him why he was so upset by the idea of Najika giving the watch Daichi gave her to Akane to make him realize his feelings for Najika were romantic. At the end of volume four, Daichi, in his jealousy, kisses Najika - but when Najika confronts Daichi about it the next day, he tells her the kiss meant nothing.
Akane has a crush on Daichi, but he does not return her feelings, or even appear to have much interest in her, though he does become concerned upon hearing from Najika that Akane has an eating disorder. Daichi does not think highly of his brother, Sora, due to Sora's acceptance of their parents' remarriage, and referred to him as a "traitor" and a "two-faced jerk" to Najika. He is also much less close to his father than Sora and seems to harbor resentment beyond the remarriage, particularly when he discovers his father's intentions for Najika.
Daichi's name means earth.
