Married for 35 years. Even amid their busy daily lives, they supported each other as a couple, working together to raise their children. The husband is nearing retirement. Around that time, they learned of their daughter's pregnancy, and they are about to be blessed with their long-awaited first grandchild. Taking this as an opportunity to slowly discuss their future, they set out on a hot spring trip for the first time in a long while. Submerging themselves in the hot springs after so long, the memories and vitality of those days vividly come back to life. Their love, unchanged through the years—their love is still very much active. Just like back then when they were young, they press their lips together again and again, hold each other tightly, and seek and intertwine each other's bodies, confirming their love for one another. We present to you their entwined full-moon sex.