Kokutou Mikiya

The secondary protagonist of Kara no Kyoukai.
He doesn’t have a single special ability to his name. A completely normal young man in every respect. Both his outward appearance and personality are plain. His trademark look is black-rimmed glasses.
Other than that, there’s not much to him. Personality-wise, he’s the prototype for Tohno Shiki.
Although he isn’t strong, he’s definitely the strongest person of all. For some reason, he’s extremely talented at finding things and nothing else.
Also, though their personalities are similar, Tohno Shiki is still a child compared to Mikiya.

Tsukihime Data Collection: Tsukihime Dictionary
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A youth in his late teens. Employee of the Garan no Dou. A very normal and unremarkable individual. One of the protagonists of the story, possessing characteristics of the Yang.
Although he was related to all characters of Kara no Kyoukai, he only stepped into the maelstrom during one incident.
Mild-mannered and caring, most people were very fond of him.
…However, for some inexplicable reason he encountered Shiki, who was his polar opposite. Subsequently, he was doomed to a long-term relationship with Shiki, for better or for worse. Be careful when walking alone during snowy nights, Mikiya.
Since he symbolized the peaceful daily life, he was very popular among people who sought such things. Even after the story concluded, Mikiya still made Shiki restless.
He was an example of “the scariest things are always found closest to you in unexpected forms.”
The protagonist of Tsukihime inherited the characteristics of both Mikiya and Shiki.

Garden of sinners Pamphlet: Kara no Kyoukai Settings Glossary
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The secondary protagonist of Kara no Kyoukai.
He doesn’t have a single special ability to his name. A completely normal young man in every respect. Both his outward appearance and personality are plain. His trademark look is black-rimmed glasses.
Other than that, there’s not much to him. Personality-wise, he’s the prototype for Tohno Shiki.
Although he isn’t strong, he’s definitely the strongest person of all. For some reason, he’s extremely talented at finding things and nothing else.
Also, though their personalities are similar, Tohno Shiki is still a child compared to Mikiya.

Tsukihime Dokuhon Plus Period: Tsukihime Dictionary Revised