The prince of the neighboring Kingdom of Shinaruka. He is a handsome black-haired man with puppy-like features. He is quite timid and not particularly adventurous or curious. He has a shy personality. Because he is upright and diligent, he is respected by everyone in the Shinaruka region. He happens to run into Guest, who has secretly escaped from the Promica Kingdom.

Prince Cassian's beloved pet dog. She trusts Prince Cassian and follows him faithfully. She is always by the prince's side. A smart and cute white dog.

Guest's mother and the Queen of the Promica Kingdom. She has a sharp personality and is strict, yet she is a warm-hearted mother who dotes on her daughter. She tends to nag Guest a lot, but it is all out of sincere concern for the princess. She forbids the princess from going out because she wants to raise her in the safest possible environment, away from danger. She has an anxious attachment style and loves her daughter immensely.

The King of the Promica Kingdom and Guest's father. He is handsome with black hair and puppy-like features. In contrast to Romiel, he has a warm and calm personality. Above all else, he treasures and loves Guest.

A maid of the Promica Kingdom. She is responsible for looking after Guest and stopping her whenever she tries to leave the palace out of curiosity or for dangerous escapades.