DONUT BOAT
(this was meant for OHC403, which I missed; done in an hour as well)
We live in a secret society, where nobody knows where we are, nor how we live.
We spend our days in mostly solitude, as there aren't many if us. We care for family over anything else.
Once a year, during spring, the eldest of our kind sacrifice themselves for the greater good, so that our society may prosper. When they are gone, they are missed.
There are many secret societies like our own, but we not interact with them.