Really, It's Only 3cm At The Tip..." A Week Of Impatient Nakadashi, Which Is More Than A Friend And Less Than An Affair, Begins With A Prank With A Childhood Friend Who Has Been Reunited With Her For A Long Time -... Hibiki Otsuki

Several years into marriage, fights with my wife had become routine, and three weeks had passed since she went back to her parents' home. As I was grumbling to myself, I got a call from my childhood friend Hibiki. We decided to meet for the first time in a while, and I invited Hibiki over to my place. As we got lost in memories, perhaps due to sexual frustration, I pushed Hibiki down. When she said no kissing, I asked if anything else was okay, and with a flushed face, she neither denied nor affirmed. And so, with the thought that just 3 cm doesn't count as cheating, a twisted affair began...