I don't know. The evidence on that seems somewhat contradictory
Kyle Rittenhouse's homicide trial in Wisconsin was highlighted by the emotional testimony of the 18-year-old man whose actions as a minor have become emblematic of a divided America.
edition.cnn.com
but even if the friend or the property owner did ask him, that doesn't necessary make his presence there with a gun in any way reasonable.
He could always have refused the request, after all -- the fact there was a curfew in force, for example, should have given him pause for thought, particularly since he was, or had been, a member of some sort of
police explorer program and might reasonably have been expected to understand the importance of his obeying police curfews, or at least to ask the Kenosha police if his presence there would be welcome.
Others are certainly not without responsibility but, quite simply, he should have known better.