Games like Ongeki Red Plus

If you finished Ongeki Red Plus, the closest matches are Uta Macross Sma-Pho De-Culture, Re:Stage! Prism Step, The Idolmaster Must Songs: Presented by Taiko no Tatsujin - Ao-ban, Noah's Bottle and Nora. All 9 share its music genre and are ranked by how closely their themes and modes overlap.