Origninally from YouTube, Baloo's video.
You can do the same with 1 Helga, and add Freesia, and Grace to increase Kaina's ATK by set effect.

1. ★6 Lian+10 (Kill 2, 4, 5, 10)
2. ★6 Kaina+1 (Kill 7, 8, 6)
3. ★6 Jin+10 (Kill 3 by counter)
4. ★6 Seto+13 (Kill 1, 9 by counter)
5. ★6 Helga+15
6. ★6 Helga+15