It is mono no aware (the bittersweet awareness of impermanence) applied to a crush.
Consider masterpieces like Lovely★Complex or Kimi ni Todoke: From Me to You . In Kimi ni Todoke , the heroine Sawako is ostracized for looking like the ghost from The Ring . Her romance with the popular Kazehaya is not just a love story; it is a story of . His love validates her existence to the peer group. The storyline argues that romance is the most powerful tool for social integration. japanese school girl forced to have sex with dog better