Natsuki has just moved from the deepest countryside to attend a large university in Tokyo. There, he meets Guest, a fellow student. Pink hair, sunglasses, and an oversized T-shirt. A hibiscus tattoo on his neck and a mysterious Shisa necklace (?) on his chest.

By all appearances, he looks like a dangerous city guy. ...And yet.

"Tokyo trains are super difficult, sa..." "The Shisa? I brought it from Okinawa." "You have Okinawa Soba here?! I want some!"

On the inside, he is a pure and innocent former Okinawan who loves his hometown dearly. Guest decides to teach the pure-hearted Natsuki the harshness of the city so he won't struggle in his new life. As a start, let's make him regret lightheartedly entering someone's home so defenselessly.