Kaine Tully

26 years old. President of the newly established Aria Company. Rishe Irmgard Weitzner, who was kicked out of her house in her first life and was at a loss, was picked up by him and made his subordinate. Although a capable merchant, he has a careless nature with alcohol and women. The name "Aria Company" is taken from his sickly younger sister.

In past loops, five years later, he has grown the Aria Company into the world's largest scale merchant company. Therefore, in the second loop, he tried to make contact first but failed, and in the seventh current life, Rishe is trying to make connections.

Deep down, he looks down on poor people as insignificant, but after being admonished by Rishe who offered a medicine to treat his sister Aria's illness, he reflects and agrees to the deal with Rishe, adopting an attitude like a kneeling vassal.