Editing Midori Days (section)

===Other characters===
;{{nihongo|Lucy Winladd|ルーシィ·ウィンラッド|Rūshii Winraddo}}
:She is an American exchange student who transferred into Seiji's high school (more precisely, into Miyahara's class). She loves Japanese pop culture, especially samurai movies, and admires Seiji because she sees him as an ideal Japanese man.
;{{nihongo|Nao Makinoha|槙葉 奈緒|Makinoha Nao}}
:A silent, mysterious girl in Seiji's class. She loves strange phenomena, and thus takes an interest in Seiji's transformed right hand. She seemingly appears at the strangest times, which gives Seiji quite a scare.
;{{nihongo|Shiro Makinoha|槙葉 史郎|Makinoha Shirō}}
:Nao's father who is a doctor. He always attempts to capture Seiji so he can dissect him to show Midori to the medical community and gain fame from his findings. While his attempts are usually foiled by Nao, Seiji and Midori occasionally do this as well.
;{{nihongo|Hisashi Sakisaka|向坂久|Sakisaka Hisashi}}
:Rin's boyfriend, Sakisaka is a treasure hunter and loves to travel the world. However, his constant disappearances annoy Rin to no end.
;{{nihongo|Miku Nekobe|猫部 美紅|Nekobe Miku}}
:She is the leader of the Crimson Angels (''Kurenai Benten''), an all-female gang who constantly harasses and embarrasses Kouta (most notably by dressing him up in girl's clothing). Despite this, she has a soft spot for the boy and later helps him out when he tries to separate Seiji and Midori.
;{{nihongo|Yukina Asano|浅野 ゆきな|Asano Yukina}}
:Yukina Asano is Seiji's first (sort of) girlfriend and childhood sweetheart. She had become friends with him when they were both 10 years old, but since she had to move away, they did not see each other for seven years until a chance meeting at a place of mutual memory.
;{{nihongo|Rina Kamaki|鎌木 梨奈|Kamaki Rina}}
:An 11th-grader who is one of the popular and best students at Seiji's school, and the daughter of a trading company's chairman. For her popularity, she has earned the unofficial nickname ''kamakiri fujin'' ("[[praying mantis]]").