Talk:Enryu/@comment-108.46.239.56-20140807135937/@comment-5693502-20150302162433

While it is true that Irregulars can manipulate shinsoo without a contract, it has been implied that their shinsoo control is much stronger with a contract.

Also, while this obvious point is probably always overlooked, Regulars must make a contract with the Guardian of the Floor they're on before they're able to use and control shinsoo on that Floor.(1)(2) So it's near enough guaranteed that Urek and Baam already had contracts with the 21st Floor Guardian when they clashed.