30 made Hitori Dattara Issho ni Kurasou tte Itta yo ne?

It was nothing more than a casual, drunken pact made between two friends: "If we're both still single by thirty, let's live together." For Tsukiko, the declaration was easily swept aside as the fleeting words of a tipsy evening, a distant scenario far off in the future. However, time waits for no one, and reality catches up swiftly as her thirtieth birthday looms on the horizon. Just as the night reaches its quietest, most suspicious hour, an unexpected visitor arrives at her doorstep. Standing there is Sora, the very person with whom she shared that fateful promise years ago. True to his word, he has returned to collect on the agreement, turning her peaceful, predictable life upside down. While their unexpected arrangement lacks any glamorous sheen or romantic polish, it quickly transforms into an unconventional and surprisingly entertaining adventure. Navigating the quirks and realities of cohabitation in their thirties, Tsukiko and Sora embark on a heartwarming new chapter of shared daily life, proving that some promises are destined to be kept.