Games like Grisaia Phantom Trigger Vol.7

If you finished Grisaia Phantom Trigger Vol.7, the closest matches are Yumeutsutsu Re:Master, Nekopara Vol. 0, Marco & The Galaxy Dragon, The Melody of Grisaia and The Afterglow of Grisaia. All 9 share its adventure genre and are ranked by how closely their themes and modes overlap.