Who is that cute boy in Lumine's stream? (AETHER HAREM ) ☆ OPENED BACK UP

Lumine had a stream announcing something to her viewers but then Someone comes in her stream and her viewers adore that person will they find out who that is?

Kill me
I hate my life
Let me die
I have nothing to do bru
/ fr
Imoa
Also Aether will be shipped with the boys in this story. Bye