Gratitude
"That's 3-2! We win this time!" Silver pumped his fist and the girls groaned in annoyance.
They had been sparring multiple times and each session consisted of 5 rounds, so best 3 out of 5. Sometimes the girls won, sometimes the boys won. This time though it went to the boys due to a clever play that had Umbra as the center. The dragon had essentially created an opening for his sister to attack him, but it was a trap which let him temporarily seal her in a space of darkness.
Silver and Thanatos then switched their opponents, making the Lich fight Kim and the Wolf to fight Belladonna.
It was an especially bad match-up for Kim since she relied on her speed and Thanatos used his large army of Undead to slow her down severely, and he had a passive barrier around him that prevented the girl from simply teleporting on his head.
As such, he overwhelmed her with sheer numbers.