Hisui Friends

Akiha is the caring younger sister of Shiki Tohno in Lunar Legend Tsukihime. She has a bit of a crush on her brother and as a result does not get along well with Arcueid Brunestud and Ciel.

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.