San Otonashi

San Otonashi was a student that attended Reinan’s Senjukuha Program

Appearance
San has collar-length dark-blue hair which she ties back with a polka-dot ribbon and blue eyes. She wears a long-sleeved, knee-length polka-dot dress with a dark ribbon on her chest. Described as a cute and pretty girl despite her age San looks to be around 14.

Personality
San is generally a very happy, pleasant and sweet girl who also has a pure heart. Despite her youthful appearance, she is actually a very mature and tough character.

Abilities
San is the heir to the Otonashi School of Martial arts Karaoke. Also known as "perfect song of protection" it is a defensive variation of Martial arts Karaoke developed by watching how dolphins emit an ultrasonic sound (or a song) as such instead of relying on the creation of dangerous shouts which could crush their targets, it’s used to produce a soft sound instead. She can do something as subtle as creating false footsteps, or using echo-location. Some of her more offensive techniques are

Siren in the Dark is the signature technique of the Otonashi School of Martial arts Karaoke that makes it such a deadly art. A strong offensive song while singing user uses a high-pitched tone that the ears cannot detect similar to the ultrasound of a dolphin. This sends small sound waves that internally damage the opponent's body in small amounts before accumulating enough to kill them.

Silence in the Dark is a melodious, resonating song. All objects vibrate at a particular frequency. When she projects and hits an object with the same frequency, the vibration begins to resonate throughout the object, strengthening until the object shatters like glass. The target can literally be anything, such as an opponent's vital spot such as their arm ligaments to prevent them from moving. By matching the hearts resonance frequency, user could even cause a heart attack.