Another Kakki fan:nyanmusu_cheer:
I know some other games that he is in as the selected character: Jewelic Nightmare, Koibana Days, Shiratsuyu no Kai, Zettai Meikyuu Grimm, Danzai no Maria and Garnet Cradle (I haven't really played the last two but I know he is a selected character)
He has also...