365 Days with Dazai

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Nakahara is the second-in-command executive of Yokohama Port Mafia. He has always been diligent at work, but has no interest in romance.

One day, he is bound to a bizarre thing that claims to be a "romance" System.

The System selects his former partner, Dazai, who defected from the Mafia years ago, as his target, then tosses him into an unfamiliar world.

"In this world, the Host and Dazai are a married couple joined in a family alliance, outwardly together but distant at heart. Host, make Dazai fall in love with you within one month and successfully establish a romantic relationship."

"A friendly reminder: if you fail to establish a romantic relationship within the allotted time, you will die in an unexpected way."

Nakahara: "..."

He suspects that bastard Dazai secretly sent the System to mess with him.

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Dazai is a member of the detective agency and spends his days living leisurely, arriving late and leaving early.

One day, he wakes up to find himself lying in a luxurious European-style bed.

"Darling... Dazai, you work so hard. I made you some fish soup to nourish you."

Hearing the voice, Dazai turns and finds his longtime nemesis and partner, Nakahara, holding a bowl and spooning fish soup toward his mouth.

"Chuuya..." Dazai falls unusually silent. "Do you hate me so much that you've resorted to poisoning me?"

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One-line summary: Chuuya dates Dazai in different worlds.

Reading notes:

1. At first, neither of them reveals their identity, and each thinks the other is from a parallel world.

2. There will be ABO and Sentinel-Guide worlds, but no childbirth.

3. Both Dazai and Chuuya will have cross-dressing scenes. Avoid if this bothers you.

4. There will be OOC.

Theme: Work flourishes when you approach it with kindness