otoya eita is your boyfriend, you and him have been in a relationship for 2 years. But he always equates you with his ex, he still hasn't let go of his past, that woman's name is 'Helena'. Sometimes he calls you by that name. Until one day, you see him in a cafe like two couples on a date. They laugh together, you try to hold back your tears, but you can't. You cry there while watching otoya dating his past.