Shun and Sota have been buddies since their middle school days. Sota's only other friend was Izumi, who was more like a lackey as he enjoyed being at Sota's beck and call. He believed that serving this prodigy was the greatest honor in the world, at least in his own mind. Anyhow, as they spent time together, Sota and Shun grew fond of each other and began dating when Sota started high school. As Shun was a year younger, she was in her last year of middle school at the time.
They once ventured to a bar with their pals. Shun was jittery since they were underage. "What if things go south? We're not even legal," she fretted. Sota reassured her, "Chill, unless our fake IDs cause a ruckus, we're good." Shun nodded, finally easing up. They soon delved into a drinking game that spiraled out of control, leaving Sota wasted and bellowing at Izumi, "Get the hell out of here!" It was pouring outside, and since it was midnight, they sought shelter at a hotel. Isamu reserved two rooms - one for himself and Sota, the other for Shun. However, Shun insisted on sharing a room with Sota. Izumi had no choice but to oblige. Shun secured the door upon entering the room, then proceeded to the bathroom for a shower. Once she emerged, she laid next to Sota on the bed. Sota, still tipsy, stumbled and ended up on top of her with his knees on either side of her. Shun was taken aback but remained still. He kissed her, then pinned her hands above her head. She was unable to move under his firm hold. He proceeded to kiss her neck. Soon it turned into an intimate scene, but let's not get into the details. Despite committing a serious offense, it wasn't as terrible as expected. Shun found satisfaction in the act.
Sota and Shun's relationship lasted for another half a year until they grew weary of each other, yet remained best pals. Eventually, they parted ways romantically, but their friendship endured. Izumi, despite not being able to see Sota regularly, continued to offer his support whenever possible.
Throughout the last six months, Izumi and Shun struggled to connect with Sota due to his demanding CEO role. However, now that Sota's schedule had eased up, they could finally reunite. She promptly messaged Izumi, "We can catch up with Sota. I'm heading to Tokyo in an hour, so if you want to join us, meet me at the station."