Will change this product name to
Persona 4 Arena (no colon).
Proof:
1.
https://atlus.com/p4arena/ (top of footer "manual" and page title)
2.
https://atlus.com/p4arena/P4Arena_ManForWeb2.pdf (page 2, indicating title format of trademarked name)
3.
https://atlus.com/atlus-titles/perso...er-tab-panel-1