Kaine: Kuro to Shiro no Endorphin

A man wakes up from a coma with red, long hair, now resembling his deceased twin brother, a singer in a band called Endorphines. His manager insists he take his brother's place in the group, but a friend begins to suspect the deception. Meanwhile, fans of the band start dying by suicide after listening to their latest album, prompting the two to investigate. In another story, a high school girl receives a free trip to Los Angeles, raising questions about its legitimacy. A third follows two bandmates, Takumi and Kai, as tensions rise over rumors of Kai leaving the group, while Takumi's sunglasses and a mysterious girl wanting to marry him add to the intrigue. The final story continues the tale of Gai and his girlfriend, Satsuki, from an earlier chapter.