[Rael's POV]
I shook my head, dismissing useless thoughts as the contents of the letter became visible to me and the very first sentence instantly captured my attention.
[I, your humble servant, Eidolon, greet you, oh great successor of the Trickster. Forgive me for being unable to greet you properly but the descendant of my old friend, the current Demon King, advised me against it, saying it would only create more trouble for you.
I humbly wish to let you know that as my benefactor and now my master, I shall carry out any task you wish for me to undertake. Please do not hesitate to call upon me whenever I am needed.
Along with that, I also have a small gift that my son, Winter, left for you in gratitude before departing for his divine realm.
The gift is hidden within the envelope itself and shall only reveal itself if you inject your mana into it. Nobody else should be able to access it except you.
