To understand why Storm 5 is necessary, you have to look at what Storm 4 and Connections ignored. The original Road to Boruto DLC ended at the Momoshiki fight. But the Boruto anime and manga have since produced story arcs that would be visually breathtaking in the Storm engine:
Naruto Shippuden Ultimate Ninja Storm 5 Road To Boruto
Naruto Shippuden Ultimate Ninja Storm 5 Road To Boruto
To understand why Storm 5 is necessary, you have to look at what Storm 4 and Connections ignored. The original Road to Boruto DLC ended at the Momoshiki fight. But the Boruto anime and manga have since produced story arcs that would be visually breathtaking in the Storm engine:
