For some reason, I imagine Akaito to have the same personality as the Rum Tum Tugger from Cats, or Finnick Odair from the Hunger Games.
"Tell us!"
"No."
"Oh, come on!"
"Hmmm… Gosh, should I?"
"Yes!"
"Oh, wait, no."
"Argh!" Rin stomped her foot angrily while Iroha just sighed. So far, the war was being fought in words, but Rin looked ready to whip the road-roller out any second.
Akaito, on the other hand, looked just too amused. "My, talking to you have been such fun, but I really must get going now, so, toodles~!"
"You can't just leave without telling us!"
"Actually, I can."
"You're a big jerk who enjoys taunting little girls, and I hope you fall into the deepest pits of Heck and die!" Rin stomped out of the room, and Iroha swore she saw the road-roller keys in her hand flashing menacingly for a moment.
"Where do you have to go?" asked Iroha, wondering if she should run.
"To take Haku out on a date. See you!" Akaito waved to Iroha cheerfully, and walked out of the room, whistling "The Rum Tum Tugger".
All Iroha could say to the empty kitchen was, "I knew it."
Gotta go!