Arcana Heart 3: Love Max Six Stars!!!!!! first launched for arcade in December 2014 in Japan, followed by PC via Steam in December 2017 worldwide. The Arcana Heart 3: Love Max Six Stars!!!!!! Xtend update, which adds new playable characters Pistrix (with Arcana Parace L’Sia) and Dark Heart (with Arcana Love Prison Geist), is currently in development.
Here is an overview of the PC version, via its Steam page:
New Playable Character “Minori Amanohara”