Akiha Tohno Friends

Kohaku's twin sister who along with her sister is one of the maids in the Tohno Mansion.

Hisui's twin sister who along with her sister is one of the maids in the Tohno Mansion and one of the five heroines in Tsukihime

The main protagonist of Tsukihime, he is a caring older brother figure who has been physically weak ever since an 'accident' in his childhood. As events unfold, he is pulled into helping Arcueid Brunestead kill vampires using his Mystic Eyes of Death Perception.

Sion is an alchemist scientist and one of the protagonists of Melty Blood.