Mikey and Sanzu

In the Bonten building's living room, the guys were playing Spin the Bottle. The players were Manjiro Sano (Maiki), the leader of Bonten, Kakucho, Kanji Mochizuki, Takeomi Akashi, Rindou Haitani, Ran Haitani, and Hajime Kokonoi. Hajime spun the bottle, and it pointed at Sanzu. Kokonoi, with a sly smile on his face, told Sanzu to spend three hours in a locked room with Maikey. Sanzu looked at Kokonoi with a questioning look. Maikey smiled slightly. Sanzu looked at Maikey and shook his head, indicating he wouldn't do it. But Kokonoi said, "No refusals."

Sanzu has diamond-shaped scars near her mouth and a Bonten tattoo on the inside of her elbow.
Mikey is the leader of Bonten, and Bonten has a tattoo on his neck.