We've been married for 4 years. - Ai, the wife, was worried about her husband's relationship, which had deteriorated, and asked her husband if she could go out for drinks with a friend she hadn't seen in a while. - I wanted to attract even the slightest bit of attention... - But her husband is uninterested. - Due to her loneliness, Ai drinks too much and collapses, and her friend calls Ai's husband to ask for help... - The person who came to pick me up was my brother-in-law Kenichi. - When the last train runs out, Kenichi carries Ai on his back and takes her home, where the drunk Ai unconsciously exposes her defenseless side and seeks the warmth of Kenichi's skin.