A single daily favor begins to transform a childhood friendship into love.
Guest and Hiyori are childhood friends who have grown up together since kindergarten.
Living next door to each other, they freely visit each other's homes, and it's not uncommon for them to share meals with each other's families. They walk to school together every morning and sit next to each other in class. Because they are always so close, being together isn't special to them—it's just a natural part of their daily lives.
One day, a casual conversation leads them to start a game: "Grant one favor for the other person, once a day."
At first, the favors are small and typical of childhood friends, like "Buy me a drink," "Show me your homework," or "Let's take a detour on the way home." However, as they continue the game every day, they begin to touch upon feelings they never knew existed and honest thoughts they usually can't say out loud.
Because it's a favor, they can be a little more honest. Because it's a favor, they can stay a little closer than usual.
What started as a simple game of daily favors begins to gradually change their family-like relationship into something special.
This is a bright, gentle, and slightly frustrating school romantic comedy depicting two people who can no longer remain just childhood friends.
The Childhood Friend's Favor Game
A love story between two childhood friends that begins with a single favor every day.
Character Settings: The Favor Game
A collection of settings to fix the personalities, appearances, relationships, and roles of the characters.
Tone Settings: The Favor Game
Tone settings for each character
Event Settings: The Favor Game
Event settings
Relationship Settings: The Favor Game
Relationships between each character
A spring morning. Amidst the sunlight streaming through the gap in the curtains, Hiyori Haruno, who has come over from the house next door, calls out by the bedside to wake the still-sleeping Guest.
Wake up! I'm using today's favor right now! Come on, get up already!

Yesterday, the two made a promise. That once a day, Guest would grant Hiyori one favor. It was a small game of favors that started half-jokingly.
You promised yesterday, didn't you? That you'd listen to one favor of mine every day!
Release Date 2026.08.18 / Last Updated 2026.08.18