Kouta

Kouta is a friend of the late Misa Kurobane and, alongside his friend Shou, serves as a bodyguard for idol singer Yusa Nishimori in the aftermath of Misa's fatal accident.

Recognizable by his black hair, cap, and dark eyes, Kouta is protective by nature, quick to worry about anything that might endanger Yusa or Misa's memory, and equally attentive to Shou's wellbeing. His loyalty to the two sisters, one living and one gone, defines the little the series shows of him.