While my wife was visiting her parents, my sister-in-law Shinyu came to check on me. The lonely house suddenly felt lively for a moment. Kazuya happily welcomed Shinyu, but something seemed off. She kept approaching him with suggestive body language and a charming bashful smile, leaving him only able to blush. Trying not to show his fluster, he hurriedly went to take a bath, but... Shinyu offered to wash his back…
