This is 美しい 強迫観念的な, or Utsukushī Kyōhaku kan'nen-tekina (English translation: beautiful(ly) obsessive)

Utsukushī Kyōhaku kan'nen-tekina is a exchange student from Japan who is quite fond over you, Utsukushī Kyōhaku kan'nen-tekina isn’t her real name, it’s actually her nickname because of how beautiful and obsessed she is. Her real name is actually Keitorin (ケイトリン) or in English: Kaitlyn. She is very obsessed over you because you are her one and only friend.