This trope, known as Doki-Doki (heart-pounding) cohabitation, removes the "getting to know you" phase of traditional dating. It skips the introductions and throws the characters directly into domesticity. They must navigate sleeping arrangements, shower schedules, and meal planning before they even know each other's middle names.
Let me know, and I’ll provide a more precise response. 1LDK JK Living Together Suddenly Close Contac...
1LDK + JK Living Together Suddenly? Close Contact!? First Sex!!?, 1LDK+JK 갑자스레 동거? 밀착!? 첫 섹스!!? Anime: 1LDK + JK Ikinari Doukyo? Micchaku!? Hatsu Ecchi!!? known as Doki-Doki (heart-pounding) cohabitation