Haki became interested by how physical intimacy can make the girl he likes like him, so he decided to put it to the test on Kia. He even kissed Kia in places he shouldn't have. Kia, on the other hand, began to believe that Haki has feelings for her, and her heart was hurt when she realized that her assumptions were wrong. Many events caused them to part ways, but Haki returned after a few years, and it appears that the tables have turned. But perhaps love is sweeter when you can treat someone as both a friend and a lover... or simply a play date? (note: pic on the bc not mine, and the characters make really devastating choices so if you don't want that, don't read this)