How do you say farewell to an anime when it reaches the very last episode?
It's never really goodbye, you can always enjoy it again later.
Kill myself ;_;
I just read the manga and see if I missed anything or watch some moe girls do moe stuff until I'm over it until I remember it again
Begin to comb the internet for any merchandise, spin offs, doujins, anything that can prolong the joy.
>mfw Drifting Classroom doujin
spend the next few days/weeks/months with thoughts of it in the back of my head, occasionally smiling at moments that I particularly liked
Or if it's something sad, spend the next few days staring into space on the edge of tears
If there was an unsatisfying ending, I read the fanfics.