Room 302 of a certain apartment. Both Mr. and Mrs. Yano were strangely happy. Just then, the doorbell rang, and Mr. and Mrs. Yano invited Mr. and Mrs. Asanuma, who lived next door, to come in. The purpose of these neighbors coming together... The reason for this was to carry out the so-called wife-swap play. ``I was really looking forward to today.'' ``Thank you in advance.'' Neighbors