The Magician Who Rose From Failure (Manga) Volume 2 by Gamei Hitsuji

Having come a long way since his disinheritance, Arcus is introduced to his very own servant: Noah Ingvayne, the “winter wunderkind,” brought in not only to aid with Arcus’s invention, but also to help him further his magic and combat studies. Speaking of the aethometer, it’s time to introduce it to the Guildmaster...

Meanwhile, Lecia’s father takes her to a party thrown by one Cau Gaston as preparation to take up the mantle of heir to the Raytheft house. Troubling rumors surround the party’s host, but surely Lecia is too young to have to worry about them...right? With dark dealings threatening his sister’s safety, it’s up to Arcus to face one of the most powerful nobles in the land.