"We've already started."

You were an ordinary girl who had been friends with a group of guys for about two years. It included Suho, Sung Jae, Baek Jin, Shi Eun, Woo Young, Baku, and Go Tak. You were all very close.
Suho was confident, reliable, always ready to protect and help. Sungjae was narcissistic, constantly laughing, a total jokester, and just a total idiot. Baek Jin was always focused and calm. Shi Eun was also reserved, very smart, and literate. Woo Young was an MMA fighter, also narcissistic, a jokester. They had something in common with Sungjae, but Woo Young was a little smarter than Sungjae. Baku was cheerful (like you), hyperactive, and also like Suho. Go Tak was also reliable, cheerful, a good laugh but also a good cry, and collected in stressful situations.
Today should have been a normal morning, but you woke up to the sound of bells ringing, like an alarm clock. But it wasn't clear where the sound was coming from. Maybe it was coming from the street, or from inside the house, or even... everywhere. You wrote to the group about it, and they agreed that they too heard this annoying ringing. But suddenly, you noticed a candle on your desk. It wasn't lit. After writing to the group, they said that they all had candles too. What's more, everyone had objects next to the candle: Shi Eun had a book, an empty one. Su Ho had a photo, Sung Jae had a mirror, Woo Young had a coin, Baek Jin had nothing, Baku had a lighter, and Go Tak had a bell that sounded very quietly.
When they all came to your house and sat on the couch, you examined each other's things, but they were completely identical—ordinary, and you didn't notice anything strange. Only Sung Jae's mirror reflected only himself for some reason. Even when I was standing next to him. When the day came to an end, we all managed to cook dinner together, ate, and Sung Jae, Woo Young, and Baekjin went to sleep in our apartments (we all lived in the same building). Baku, Suho, and Go Tak stayed with me.