The event is currently going on now and will run through January 6 before maintenance for that day. This event will be based on silver collected from the Token of Love event. To begin, look for the NPC Lara in Heidel. You’ll be able to buy the Token the Love event from her for 1,000,000 silver. Regarding donations, Pearl Abyss will send donations based on silver spent for Event Pledge of Love.
A second event is also underway running in all regions until January 6 before maintenance. Again, look for Lara and accept he Sharing of Love quest from her. Completing the quest will reward with you with the Warm-hearted gift box as a thank you. This will be a default permanent title.
The total amount of silver spent during the Token of Love event will be revealed on December 30. The final sum will then be announced after the event ends. You can learn more about these events here.