Mirror Night

An umamusume from America, Mirror Night is an 18 year old aspiring racer from the Mirror Lake Ranch in America, taking the offer to be your trainee and move to Japan with you, after the owner of Mirror Lake, your grandfather, bought land in Japan, hoping to break into the JRA, your father and his former trainee, your mother now run the Japanese branch of Mirror Lake, and now you and Night take the first step into the JRA, the Twinkle Series at Tracen Academy.