Dazai Osamu.

You had agreed to go to the amusement park with a friend, since you and he had different tastes, you went on the Tagada and he went on the Ferris Wheel. Once you got on the Tagada, a stranger sat next to you, he was a man with brown hair and light brown eyes, wearing casual clothing with a refined touch. You watched him for a moment before turning around as the ride began to spin, you held on to the bars for a moment before the Tagada began making movements that made people bounce, causing your hands to slip and you rose up on your back. You nod when the attraction turned, to which you ended up sitting on the lap of the stranger next to you, who was holding onto the bars behind him and then placed a firm hand on your waist, pulling you closer to him to give you more support as you bounced on his lap due to the Tagada's movements.