Sakuya Inou

Sakuya (咲耶) is a main character of Sister Princess.

Background
Sakuya claims that she and Wataru are connected by a red string of fate, and would love for him to see her as a woman rather than just a sister.

Personality
Sakuya acts like an average teenager and is very fashion-conscious. She also appears to be the most emotionally sensitive when it comes to her brother, undergoing extreme reactions when they are separated or she anticipates separation. She also appears to have a cheeky personality, often using double entendres and innuendo only to dismiss them as jokes when her brother gets flustered.

Summer Radish Vacation 2
Sakuya's is among the names Tomaru guesses as Rin's name.

Later, Sakuya and the other sisters appear to take Rin with them to search for their brother.