Ace_Reishiki

It depends on what you like about Grisaia, is it the theme (action/military/spy things), characters (Phantom Triggers series focus on different characters), or most importantly, the romance/sexy scenes? If you like the overall theme, then sure, maybe you like it. But if not, then maybe you should try something else. They're vastly different than Grisaia trilogy, more... slice-of-life and mainstream friendly.