Shin

Shin (シン) is a young man from Takunaha and Gugu's older brother.

Appearance
Shin has short, blond, combed back hair and dark eyes. In the past, he works tan shorts with a red and white pattern on the left leg. Years later, he wears a long cardigan, shirt, and pants with the same pattern on the left leg.

Personality
Shin is an optimistic person, he tries to cheer up Gugu after some money went missing from their savings and is convinced that he can change his fate and become successful/rich on his own with the money Gugu and he saved up.

He's also ambitious and hard-working, even though his first attempt at becoming rich on his own failed, he managed to make a living for himself and open up his own store in the short span of four years, motivated by the promise he made to Gugu.

However, it's implied that he tends to gamble, which might have led to him being kicked out of whatever establishment he was living in before, be it because he was unable to pay rent or because he stole money to gamble with.

Background
From a young age, Shin and his younger brother, Gugu, have been working as servants for various families. They eventually went on to work as farmers and merchants for another employer. During that time, they lived near a forest on the outskirts of a town in a makeshift tent.

Plot
Gugu ponders his identity, wondering why he is who he is and why he wasn't born into a rich family. Shin says that he often thinks about that as well, but reminds Gugu of their promise to work hard, earn money, and build a big house that they'll live in together. The next day, Shin and Gugu eagerly go to work.

After work, Gugu comes home from work and sees Shin talking to some shady men that Shin calls his "friends". Gugu notices that some of the money they saved up has gone missing from their savings box and asks Shin if his "friends" might have taken some, to which Shin responds that he shouldn't accuse them and that there isn't anything they could do about it now, so they should focus on just earning it back.

The next day, Gugu comes home to his brother as well as all the money savings missing. In the now empty box, there is note from Shin saying that he was going to "change his fate".

Several months after Gugu's accident, he comes across Shin in town getting thrown out of a business. Shin is passed out in an alley way, frail and on the verge of starvation. Gugu feels sorry for him despite his brother's betrayal and leaves the ring he received from Rean in Shin's hand. Just then, Shin awakens and calls out to Gugu, who answers with "I have no brother" and leaves.

4 years pass and Shin approaches Gugu at the Booze Shop. He tries to make small talk with Gugu, which angers him. He calls him out for abandoning and betraying him. Shin tries to reconcile using Rean's ring, showing his conviction of earning money on his own, when he could have easily sold the ring to lead a carefree life. He tells Gugu that he started his own farming business and now wants him to come live with him, but Gugu declines. Shin goes to say goodbye to Booze Man and tells him to return the ring to Gugu.

After the battle at Rean's mansion, Shin sees Gugu's body and cries. He and Fushi tell Booze Man and Pioran about Gugu's death together.

Gugu
Shin and Gugu used to be very close as brothers, but one day, Shin betrayed Gugu by taking all their savings and leaving Gugu to fend for himself. The two meet again in an alleyway when Shin is thrown out of a door and lays on the ground, seemingly unconscious. Gugu gives him Rean's ring to help him live a better life, but he did not forgive him.

Four years later, Shin comes to Booze Man's shop to meet Gugu again. Shin tries his best to make up with Gugu, promising him to earn enough money to build a big house and live together like they did before, but Gugu isn't interested. Despite Gugu's anger, Shin wants to prove that he's his brother and promises Gugu that, if he ever needed any help, he would be there for him.

In Gugu's vision of paradise, Shin carries him on his back. This proves that, despite his anger towards his brother, Gugu wanted to make peace with him.

Mister
Shin and Gugu used to work for this farmer. Not much is known about their relationship, but from the way they interact with one another, it can be concluded that the brothers were trusted and well-liked workers.