A Serious Older Sister Suddenly Says Shockingly, "Would You Like To Play The King's Game?" Apparently, she wants to practice so as not to be embarrassed at the first joint party in her life. Well, if it's just practice... and if you go out with him... A series of unexpected orders, and never refuses! Even though they are older sister and younger brother, they manage to do naughty orders somehow. And sooner or later, my older sister who felt horny...
