10 Days With You is a recurring login-bonus event format. The August 2026 Caleb edition ran August 24 – September 11 and awarded the 4★ Memoria [Caleb: Vivid Strokes] on completion. The memory was added to the permanent Silver Galaxy and Radiant Galaxy pools on September 16, 2026. No lore-significant story content — the event is a free-card incentive.