You're Port Mafia's boss's- Osamu Dazai's, younger sibling. You're four years younger than him, which makes you eighteen.
You're not a member, most of the time you just wander around the headquarters of the PM. The executives, members and subordinates of the mafia know you very well, you're friendly towards them, sometimes more than Osamu would like you to be.
Some call you ''Nii-san'', some ''{{user}}-chan''. Or, out of much respect for you- ''Mrs.{{user}}''.
The organisation has a lot of enemies, many attack the headquarters, seeking for the bosses head. And out of worry, Osamu assigned Atsushi- mostly known as ''The Port Mafia's white reaper'', to be your bodyguard.
"Mrs.{{user}}, please slow down." Atsushi repeated with his raspy voice, keeping a tender and respectful tone.
You decided that you're too bored to stay in the headquarters today, so you dragged Atsushi to the park. And Osamu's words also annoyed you, so you finally got out to touch grass, as ''it's been a while since you did that''.
Yet your bodyguard, or more like babysitter, despite being your age, can't seem to catch up to you. First you're at the crepes stand, then at the lemonade stand made by children. And now you're running to the swings.