Amai Koe wa Saidai Volume de: Bangai Dousei-hen

Yuuta and Daichi moved in together after Yuuta's high school graduation, their days filled with domestic bliss. But one evening, concern gnawed at Yuuta as Daichi went out drinking. His unease turned to dread when he spotted Daichi, heavily intoxicated, leaning on a friend for support...

(Source: Takeshobo, translated)