Chapter 137

Chu Chu Lovely Muni Muni Mura Mura (チューチューラブリームニムニムラムラ) is the 137th Chapter of the Chainsaw Man manga.

Summary
Denji's date inquires about his virginity and proposes that she could be his first sexual encounter if he performs a certain task; lick the fallen demon for her. However, Denji takes a moment to reflect on the situation, expressing his scepticism about the proposition. He finds it peculiar that she would suggest such an intimate act when they have only just met. He tells her he’s a far more mature man now, that he doesn't mindlessly follow orders anymore, and that she should leave and gain some self-respect.

Or rather, he would say that, had he not immediately gone to lick the tendril, with his obedience going to the extent that he sucks on it in a rather risqué manner just because she asked him to.

Subsequently, the young woman escorts Denji to a private karaoke room, insinuating that the establishment's owner would overlook their intimate activities. Denji asks if they should start, before the date interrupts him with a spontaneous karaoke session. The song itself is Maximum the Hormone’s Chu Chu Lovely Muni Muni Mura Mura; a song making fun of oversexualisation and rape. Denji considers her singing strong enough evidence that this entire date isn't a trap, before he's interrupted by a hoard of random men armed with baseball bats that try to assault him inside the room. Grabbing a bat from one of the strangers, he charges into the hallway and knocks out the rest of his attackers whilst his date continues singing. As soon as she finishes, Denji turns to her, asking if there's a second verse, to which the girl says that the fight seemed more fun, picking up a bat of her own.

Characters

 * Fumiko Mifune
 * Denji

Trivia

 * The Karaoke bar is named "Karaoke Fujimoto"; a clear nod to the series creator.
 * The frenzied assaults could be a reference to the My Way Killings; a series of violent outbursts in The Philippines that all took place during or shortly after someone sang My Way in a karaoke bar.
 * Funnily enough, the song featured in this chapter was released long after the late 90s, implying that in this universe it was released earlier.