Tabuki is handsome tanned-skinned young man with dark plum hair that has bangs hanging on the right side, blue-gray eyes and oval-shaped glasses.
Tabuki is first shown as a lighthearted and maybe somewhat naive boy. But, it is later revealed that he's got a really dark and vengeful side that makes him a very tormented and helpless person.
On March 20, 1995 when Tabuki was about 10 years old, he was late getting up for school and missed a fatal train attack. Unfortunately the attack killed his childhood friend Momoka Oginome and he later attended her funeral in disbelief.Tabuki remained friendly with the Oginome family, and was known to visit for dinner on "Curry Days". He's known Ringo since birth, and when she was about eleven she seems to become taken with him, and eventually believes that in place of Momoka she will love him.
As a teenager, Tabuki attended West Garden High School where he would later teach biology.
He also met and then started going out with a popular and beautiful actress named Yuri Tokikago and he eventually became engaged to her. In Episode 08, they announced their engagement at a party that was attended by Ringo Oginome and Shoma Takakura and Tabuki moved in with Yuri the same night after their party. Later, they break off their marriage after realizing that they can not create a fake family together. In Episode 19, he quits his job and it is unknown where he went. In Episode 24, he stays together with Yuri as they realize why they were left behind in the world.
Tabuki is unaware of Ringo's obsession with him and he thinks nothing more of her than a sister.
Tabuki seems to have shared romantic feelings with Momoka Oginome (Ringo's sister) and her death left a definite impact. They attended the same school together as children and Momoka worked him into her future according to her Diary.
Tabuki is engaged to Yuri, the famous and beautiful actress of Sunshiny Theatre Troupe where she treats him indulgently and she finds his seeming naivety child like and cute.
- The name Keiju means "Japanese Judas-tree" (桂) (kei) and "tree" (樹) (ju).
- Keiju's surname Tabuki means "many" (多) (ta) and "butterbur" (蕗) (buki).
- ↑ 1.0 1.1 Momoka Oginome died when she was 10 years old in 1995, sixteen years ago. Presumably Tabuki and her would've been the same age. The math: 10 (Momoka's age at her death) + 16 (years since that incident) = 26
- ↑ Episode 3, March 20, 2005 Tabuki comes over for dinner, Ringo is starry eyed.
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