To keep the experience fresh, the live-service elements have been modernized. Players can expect a streamlined "Gacha" system with better pity rates and a rotating roster of seasonal events. The cooperative "Raid" mode has also been revamped, allowing for real-time synchronization between friends to take down massive, screen-filling bosses that require precise timing and coordinated skill usage.
Since "Kansen" often relates to Japanese media (meaning "Chance" or "Opportunity") or specific gaming/anime communities, I have drafted a suitable for a newsletter or social media, and a Save-the-Date format.
Unlike a typical “reunion” which might bring back old ships, the “new” tag suggests fresh story chapters, never-before-seen Kansen (e.g., new META ships or UR rarity characters), and original lore developments.