Let your sister-in-law ride a horse every day

Airi Kijima's sister-in-law is in love with her husband's younger brother: Airi Kijima has been in love with her husband's younger brother for a long time. Taking the opportunity of this guy coming to her house to visit, Airi Kijima suddenly confessed her long-standing feelings. Airi Kijima often dresses revealingly, teasing this guy with sexy clothes, looking  extremely horny. Will his younger brother fall into Airi Kijima's trap?