Yamamoto likes watermelon in the summer, odakyu when he's sick. He likes an-pan buns, and doraemon, playing baseball and arcades. Hibari likes seasons changing and school discipline. He likes green tea mochi and tanka, culture festivals and tea ceremony.

Yamamoto is friendly but polite, he gives up his seat on the subway for pregnant women and the elderly. Hibari is quiet and reserved, he takes littering very seriously on his walk in the park and disciplines anyone else who doesn't. Yamamoto likes manga cafés, variety shows, and Yamamoto likes his katana. He likes the feel, light and strong in his hand as he protects his friends, with deep strikes and clear slashes. Hibari likes recycling, origami, and Hibari likes his tonfa. He likes the feel, heavy and imperturbable in his hand as he secures Namimori, with crushing bone and bleeding flesh.

Yamamoto likes Tsuna. Hibari finds Tsuna startling.

Yamamoto likes laughing, and being outside in the grass or under clear skies, or both. He likes sushi, sakura watching, and hanabi on silent, cool nights.

Hibari likes resting, and being outside in the grass or under clear skies, or both. He likes sushi, sakura watching, and hanabi on silent, cool nights.

Yamamoto loves Japan, and sometimes he misses it. Whenever he feels this way, his feet somehow automatically bring him to Hibari, who loves Japan, and sometimes misses it. Whenever Hibari feels this way, somehow the person who always manages to find him is Yamamoto.