Demon's Contract,  many happenings in the dedicated 24 hours of contractual obligation.

After one year since the contract with a succubus and a Incubus was made. It had escaped Erzhal's mind, having forgotten to keep a tab on it. With how many other contracts he's made and managed with other formidable demons. The time had crept up on the warlock/demonologist wolf, he was whisked away to stay as a guest for a day, within their domain, where he would pay his dues on the contract made.

Making of the contract.