How many episodes does Namba in the Crown of Sin have sex with Arisa and rebel against the set?

Looks like it's ...... episode 17In BAI 17, Arisa was placed under house arrest.

In the process of receiving a call from Zhi's resurrected Yadao, Namba was discovered by the outsider, and when Namba asked about the identity of the caller, he used his body color to lure Namba to conceal the identity of the caller and obtain information about the date of escape and the student, so as to achieve the goal of the coup.