The night is long, and everyone is asleep already except Lyan. He was observing the summoning grimoire that is currently showing him the events occurring inside the summoning grimoire's space.
As he stares at the disguised grimoire, Wilhelmina's friends want to thank him for saving them, but stopped in their tracks when they saw he's very absorbed and focused on his book.
Tesha also saw him but she didn't leave him alone because of the same reason as Wilhelmina and the others, it was solely because she was too sleepy after eating so much, so she went ahead to the room too has a nice and cozy sleep.
For about two hours, Lyan observes the progress of his summonable creatures inside the grimoire in absorbing the mana from the frost giant's corpses and the frost undead corpses.