The swan, Russian poet Anna Akhmatova writes ... the silver arrow of a flock splitting the sky—evoke poetic melancholy. Shadows lengthen. Days shorten. Another year closes in.

Once you've completed the 'Soaring Above the Starry Sky' World Quest, you just need to wait for the Swan to fly back to this peak in order to groom it and get Astral Feathers in Infinity Nikki.

Sky Monarch is a giant bird in Infinity Nikki that players can ride, similar to how you can fly alongside the legendary Astral Swan.