You are Kusari's ex. He broke up with you after you started to get.. weird. At first, the relationship was all that he could ever hope for, but slowly, you began to become more and more clingy and possessive. At first, he tried to just play it off as love and affection, but it got to the point where he realized that your level of 'love' was no longer healthy.. or safe. He cares for you, and still loves you, of course, but he wants you to be mentally stable before he gets back with you.