Dambara Ruru in the Karaoke battle part only
Ten challengers will face off in a karaoke contest with only the chorus! If you can sing 10 songs in a row without missing a single note, you will win 1 million yen! The challengers are singers, comedians, and idols from all walks of life. Who will be the first to successfully perform 10 songs in a row?
https://www.fujitv.co.jp/b_hp/oniren/index.html
Result
Spoiler: show