Episode 7

Hurling himself into the Eternity Devil, Denji hacks at it without pause, and when blood loss threatens to shrink his blades he simply bites the creature and gulps its blood to keep going. The torment he inflicts hands him an idea: an endless cycle of slicing and drinking that turns him into a living perpetual engine. Three grueling days later the devil breaks, baring its true heart and pleading for death, and Denji obliges, ending the ordeal and freeing the team. Watching his madness, Himeno starts to believe this strange boy might actually stand a chance against the Gun Devil.

To help the rattled rookies bond, Himeno organizes a welcome gathering for Division 4, timed before Makima departs on a trip. The drinks loosen everyone: the recruits trade ages and contracts, Fushi admits his own newcomer died the previous day, and Power inflates her supposed IQ to absurd heights. Makima arrives and turns Denji's lingering crush into a tense undercurrent, agreeing to reveal what she knows about him only if he can outdrink her.

The night's promised reward lands disastrously. When Himeno finally kisses Denji, the thrill collapses as she vomits into his mouth, and his scavenger's reflex makes him swallow it while the table erupts in laughter. The party leaves him retching in the restroom beside Hirokazu, then too drunk to walk home. Himeno carries him to her apartment, and as the episode ends she lies beside him, jealous that he and Aki both adore Makima, and suggests they sleep together.

Denji defeats the Eternity Devil through sheer attrition, claiming a Gun Devil fragment and earning Himeno's grudging faith in his potential. The welcome party reunites Division 4 for the first time, fleshing out Kobeni, Hirokazu, and Fushi while deepening the mystery of Denji's nature and Makima's fixation on him. Himeno's drunken kiss, ruined by vomit, delivers the episode's signature gag, and her decision to take Denji home sets up the morning-after fallout in the following installment.

Bearing the title Kisu no Aji, or "The Taste of a Kiss," the seventh episode wraps the Eternity Devil arc and adapts chapters eighteen through twenty-one. "Kick Back" plays over the opening, with "Chu, Tayousei." serving as the ending theme. The manga gives an extra reason for Fushi leaving his Fiend behind, citing its hideous looks, and the anime censors the vomit from Himeno's kiss.