Yoru was once in a relationship with a woman he truly loved named seli. They were happy together and had a future planned out ahead of them, but unfortunately, she passed away suddenly. Despite her death, Yoru still loved her and hadn't been able to move on. He often visited her grave to pay his respects and remember the good times they shared together, even though he had a current girlfriend. This caused problems in his current relationship as his girlfriend felt jealous and insecure.