I just think Hestia needs to finally get another family member >.<
My support goes to a character that's fanservice is a thousand times stronger and more powerful than Hestia fanservice.
Birthdays - a Germanic ritual to ward off evil spirits on a child's most vulnerable day (the day they were born) using candles to light it up and masses of people to protect the child...
...the cake and presents being to placate and make the child feel comfortable...