Youth Regaining Potion
It was not only Terran but also Kaily who got hit by the lightning. They called their master by his name after all so it was understandable that they were going to receive some punishment.
Of course, it was only after that did they realize that they had said his name by mistake.
After seeing this happen, Aella, who previously was a bit suspicious, now became sure of it - 'Since they were desperate enough to take master's name, they would surely be his servants.'
She looked at Alira to whom he had already taken a liking to and asked, "You, are you master's servant as well?"
"Yes.", Alira nodded with a smile on her face.
Well, Shin did term it as friends however this was something that beasts wouldn't understand that easily - they are after each other's lives every time so they wouldn't have time to think about the term friends.