[This section is under the POV of Leo]
Initially, Kane had actually tried to invite Leo to sleepover at his house. However, Leo was not in the mood to play games as he was still feeling slightly pissed about everything that happened in the afternoon. Although he still felt that he had the responsibility to look after Kane as a result of what happened, he intuitively felt that it would not be good to intrude upon the other's house, so he simply used his negative mood as an excuse to decline the invitation.
After making sure that Kane would be alright on his own, Leo walked Kane all the way towards the entrance of the latter's house before walking back to the limousine again, waving at Kane as the car leaves from the porch.
Kane simply smiled back before shutting the front door behind him.