The Days I Switched Bodies with Manchester Tea

I'm Kawashu Yu, a trainer who's been working flat out for three years and is finally about to become permanent. With Senior Momoe's help, I met a girl named Manhattan Cafe. She's quiet and gentle. I've often heard people say she has an "invisible" friend, but I believe I'll do my best to move forward together with her. But that imaginary friend is actually real? And why did I suddenly switch bodies with my own trainee?! Next week, I'm supposed to run in her debut race?!!! Cafe, save your trainer! What? You even signed me up for the overseas Prix de l'Arc de Triomphe? No, no, I'll die, Cafe!!! Friend, for the sake of Cafe's body, help me!