Triangle Heart ~Sweet Songs Forever~

Kaihe is a high school student who has been given the task of becoming the chairperson for St Luminous, a private religious school for girls, after his grandfather died. Kaihe, along with a friend, arrives at the school to take care of business. But soon, mysterious disappearances start to happen. Will he unravel the mystery of the school and its past before its too late?

Alternate titles: Tsukihime, Shingetsutan Tsukihime

With a past shrouded in mystery and a blank memory, Shiki Tohno seems to be just another "average high school student". That is, until he nearly kills a female vampire with his secret deadly ability to "see the lines". His journey to unlock the secrets of the Tohno family and unbury his own lost memories has only just begun, and now he must also help the woman, Arcueid Brunestud, find a lethal phantom named Roa, and kill it using his ability.

After being placed in a reformatory, Saki Asamiya has only one thing in abundance: attitude. But attitude alone won't help when Saki is faced with a decision: become a cop and help hunt down criminals or watch her imprisoned mother be executed! Thus, she heads back to the crime-ridden school of her past, Takanoha High, only to find that a trio of women known as the Mizuchi Sisters have taken over. Armed with a deadly yoyo and a razor sharp wit, Saki is ready to clean up the school and save her reputation as the number one bully, while hurting the bad guys in the process!