Younger Brother Gacha Machine

(Updated whenever inspiration strikes)

[Want to find bonds and a family?]

[Want to understand love and being loved?]

The Little Brother Gacha, your perfect choice

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1. Unfeeling little bird x clumsy big brother

Tsushima Shuji has always disliked this Akiyama Ema who claims to be his big brother.

He's clumsy, ignorant, and only knows how to fool him.

[But... that doesn't give you the right to leave me behind... you idiot, Nii-chan]

2. Little sunshine brother x big brother who studies hard

Luffy was sent by his grandpa to stay for a while at the home of a big brother named Ema.

Ema's home is so different from Windmill Village that Luffy's round eyes can hardly take in all the new and amazing things.

[Ema! Nii-chan! I love you the most! Buy this for me!]

The boy hugged the young man and begged in a voice as sweet as sugar.

3. Naive little lamb x big brother who gradually matures

The first person Nakahara Chuuya saw when he opened his eyes was his big brother Ema.

Ema teaches him how to use chopsticks, reads him lovely fairy tales, and explains all sorts of things about the world.

[Big Brother Ema is so amazing. When I grow up, I want to be just as amazing as you.]

4. Double-personality little tiger x dependable big brother

Little Yuji has two people inside his little heart, as Big Brother Ema explained to him.

One is mature but sad and gloomy, while the other is childish but happy and sunny.

[Don't worry. I'm here, and nothing you fear will happen.]

[Yuji just needs to be happy.]

Akiyama Ema promised.

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Please note:

1. Dazai is the first little brother, but his main storyline comes later. Luffy's story will be written first.

2. This is a crossover setting. The early worlds are K and Conan. Most of the main plot takes place in the male lead's world. If the worlds eventually merge, the One Piece world will not merge with them, since the gap is too big for it to fit.

3. The main story is about raising kids and learning how to love and be loved, so it's mostly a slice-of-life story. The little brothers are children throughout the story!

4. Updates are irregular, since I'm still writing another novel. If I finish it and have time, I might update this one daily... maybe.

Theme: Family bonds are the most wonderful of all.