Umi no Yami, Tsuki no Kage

Kobayakawa Ruka

Main

Rumi's twin younger sister. Ruka is shyer than Rumi. however, sometimes, she becomes emotional like Rumi. Ruka was infected with a virus at an old burial mound, and she gets supernatural powers (flying in the sky and power pass-through), and an antibody t...

Kobayakawa Rumi

Main

Ruka's twin older sister. Rumi is more tomboyish than Ruka, but they make a little difference such. Rumi and Ruka loved Katsuyuki but Katsuyuki fall in love with Ruka. Since her envy and hatred for Ruka have been increased by virus, she turn into evil. Wh...

Touma Katsuyuki

Main

A high school student. Katsuyuki is famous sprinter. He is a good looking guy and popular with the girls. He fall in love with Ruka. Only he can distinguish Rumi from Ruka. Katsuyuki meets with the case that Rumi causes. He supports her in a side of Ruka ...