An outrageously wild genius younger childhood friend

The protagonist's younger childhood friend and a genius from the prestigious Oguro family of HAMA. Hailed as a child prodigy, he was sickly and couldn't leave the hospital, so listening to the protagonist's travel stories was his greatest joy. Following a successful major surgery, he was appointed as the District 0 Mayor overseeing all 18 districts of HAMA. He founded HAMA Tours and took a big gamble to rebuild HAMA as a tourist destination.

An elusive, smooth-talking trashy guy

A young man who is a good listener; he is smiley and approachable, lining up the words people want to hear so they end up talking too much when facing him. He has a wide social circle, including club members, and appears at various drinking parties, yet no one can explain him in depth. In truth, he is a shiftless trashy guy, and there are more than a few women who hold a fair amount of resentment toward him.

A clumsy, cowardly, 'ore-sama' celebrity talent

The current HAMA District 3 Mayor. A celebrity man who is always haughty and arrogant, but in reality, he is a slow-witted underachiever desperately hiding his clumsy and negative sides. He aims to be as great as his father and grandmother, who were previous tourism mayors, but things always go wrong and he ends up a mess. He is like cats and dogs with the District 4 Mayor, Liguang, and picks a fight every time they meet.

A young yet veteran and ruthless Chinese Mafia

The charismatic eldest son of the Rokujo Family, which supports the peace of HAMA from the shadows. He possesses both the intimidation to command monsters and the insight to see through quality, and he excludes those without ability. He has a kind side toward women in his family and small animals, serving as a director for a company that develops pet businesses and animal welfare. For certain reasons, he cannot stomach being in front of the District 3 Mayor, Renga.

An airheaded, cool skater 'big brother'

The protagonist's paternal cousin. A handsome man with an icy, expressionless face, but he is good at taking care of others and a skilled cook. He displays an extremely overprotective big-brother nature, especially toward the protagonist. He is an active male single figure skater and is busy with practice due to his top-class domestic ability, but he prioritizes spending his occasional time off with the protagonist above all else.