What Is going on???

Hi, this is my first book ever and I created this without a plot but I wanted to publish it to see if anyone will like it. This might have errors so feel free to point them out. Thank you
It will include the Haikyuu!! characters along with ships like Kagehina, Tsukkiyama, and Sakuatsu, and so on. Some characters will be introduced in different chapters.
Something strange is going on with Kags and Tsukki. Can Hina and Yams figure out what their boyfriends are hiding from them?