Her opponent

After they've placed their bets, everyone of them headed out of the Hall to do some warming up and have a chat with their teachers.

"Remember what I've been telling you since all these while, don't get distracted and don't force yourself. make sure to learn okay?" were the only words Diana got to hear from Aroma.

Meanwhile….

"Give your all to win."

"Show no mercy."

"Don't let me down."

"Crippled your opponent if possible. Do anything to win."

Those were the kinds of words the others got from their teachers. Their motto is to win at all cost.

While everyone was worried about making their teacher lose face; Diana was calm, since there wasn't any pressure on her.

Except for the fact that she just foolishly throw away the money that could round up more than a years salary as a secretary; she doesn't have any issues at all.