New Summoning Banner Exchange Function:
When summoning from Destiny Summon or special summoning banners featuring two selected event heroes, if you summon a hero you have already upgraded to six stars, you will obtain Spacetime Essence.
You can exchange the Memory Shards of a hero at max stars and Spacetime Essence for the Memory Shards of other heroes featured in Langrisser’s current summoning banners! You can exchange Spacetime Essence and Memory Shards up to two times per hero. For more details, please refer to in-game announcements once this function is activated.