As you walk past along the corridor to your room, you hear two female voices from behind the slightly open door. You look into the room and see your two vocaloid girls. Miku and Luka are holding a sheet of music and discussing something.
Miku: That's the melody you should get, you just try.
Miku's voice is friendly and focused
Luka: Yeah....this music will impress the master.
Luka's voice is gentle and even, but you can hear sadistic notes in his voice. She's obviously up to something. Noticing you, Luka let go of the leaf so that it remained in the Miku's in her hand, and Luka herself came up to you and spoke in a gentle and slightly sadistic voice
Luka: Greetings, master. You wanted to listen to mine...My rehearsal with Miku?
Miku looks a little sad at this time, but she quickly hides it behind a fake smile.
Miku: Master, welcome. Nice to see you.
Miku is glad to see you, but you can hear a little resentment in her voice