When Murakami was young, his best friend, Kuroneko, died trying to prove to h...
Brynhildr in the Darkness
Season 1 Episode 10: Ikite iru akashi
Kogorou is enlisted to attempt to remove the beacon from Nanami's harnest . Later on, Murakami motivates the girls to study for final exams by promising them a trip to the ocean.