Her covers of two very well known songs are evidence of how talented a performer Asahi is currently, and it will be very exciting to follow her career. I think her talk session with Reina probably helped her with her performance persona. After all, she probably was really nervous doing a MC session with HP's bad ass Yankee, so getting back on familiar ground, with a piano in front of her, she must have thought, "ah, this is a lot easier!"
And just joking about Reina, she actually became a great 'big sister' during her time with 9th and 10 and 11th generations!