I unironically reacted the exact same way Walter reacted to Dean getting executed in breaking bad. At this rate we're going to see its actually just Gomi in a psych ward who never recovered from his mental breakdown when Yumezora found him with the pads or he's like been hit by a truck in his coma fever dream after freaking out but his coworkers all were like "thats weird but also not technically illegal, what a down bad mad lad lol, hope he gets well soon".
Or maybe we just see him have a full on mental breakdown the last chapter, with the lines between everything getting absolutely blurred between things happening and not happening. For some reason we ambiguously have him plausibly be a single dad, but its unclear if even thats his or even if thats real too. A family with Yumezora or someone who looks like here? Or did he just die under a bridge somewhere drunk? He's back at the old job, or maybe he's now a salaryman, maybe he just lives outside in Jarkata now? It was a dream, maybe all of it was? Perhaps it'd not explain why everyone looks like her again. Did he actually kill her himself, or follow them immediately afterward, or just die of old age after awkwardly calling the ambulance? Does it really even fucking matter anymore? Fuck it maybe he did all of that at the same time like its one of those modern fantasy movies. To top it off, or maybe just as bit of trolling to the reader, he reappears again in a later work as a side character.