
Quick answer — "Katachi ni Dekinai Monologue" by Kotoko is the ending theme of Aru Asa Dummy Head Mic ni Natteita Ore-kun no Jinsei.
"Katachi ni Dekinai Monologue" by Kotoko is the ending theme of Aru Asa Dummy Head Mic ni Natteita Ore-kun no Jinsei.
"Katachi ni Dekinai Monologue" is performed by Kotoko.