Sister-in-law's Hot Spring Trip: The younger brother, who joins his older brother and sister-in-law on their trip, experiences the journey with his gentle sister-in-law... (Rieko Hiraoka, NGOD-246)

My annoying older brother summoned me to visit him, and I had no choice but to go. As a result, my brother and his wife took me to a hot spring inn in another prefecture to work as their driver… During the journey, my gentle and considerate sister-in-law greeted me in a sexy yukata in the bathroom, arousing a strong desire in me… An unexpected development unfolded between me and my sister-in-law amidst the spread-out cotton blankets…