The fifth set of 2025 for Japan, called M1L MEGA Expansion Pack Mega Symphonia (M1S) is officially revealed during Japan Championships 2025 livestream. 

The new Mega Evolution ex cards appear to be textured and have glitter similar to the existing Tera ex cards. Also compared to the previous Mega ex cards from XY / ORAS, these cards are Stage 2 and evolve from their pre-evolution (so Kirlia etc.), during XY / ORAS this was it's final evolution form with a spirit link, when all EX cards were basic.

This set will launch on August 1, 2025, with each booster box containing 30 packs.

• 1 Booster box includes 30 packs.
• 1 Booster pack includes 5 cards.