>>16539239>>16545166K-On! has males interacting with the cast. You can treat these episodes as the equivalent of a vtuber having a collab with a male character. The tl;dr of this is "real people don't act like anime characters". So if you treat someone that is not trying to emulate anime as someone who does, then you set yourself up for disappointment.
One defining criteria of anime is that they have a foreseeable conclusion of each season and episode, making ~21 minutes and 13-26 episodes per season very common. These constraints work in a way that the cast around it (writers, animators, VAs, all of which are mixed male and female) have to convey everything to you with the time and budget they are getting. And if they want to convey CGDCT to you, everything that happens around it for facilitation (such as male side characters) only serves to provide immersion and relatable characters. For example, any CGDCT-based story that involves "growing up" or "parents" must inevitably introduce a father because a girl being fatherless would in itself be a plot point required to address.
So: A seiyuu who treats vtubing as a CGDCT anime character will
>have to graduate in a foreseeable timeframe>ignore all interaction that has to make her act outside of her character. This means no chat or SCs where she isn't acting CGDCT.>fictionalize her off-stream activity and believably convey to you that everything interesting that ever happens in her life is everything you ever get to see, because the uninteresting or unappealing parts of her life are not her being a CGDCT, and all the interesting parts are part of the character she wants to convey to youIn opposition to this, most seiyuus of a vtuber character
>don't want to graduate>want to interact with other people in unscripted collabs and with unscripted viewers>recount non-fictional (IRL) activity to their viewers, with a ~50% chance of it involving a male, such as telling them about her day or what happened in her childhood>perform not only as a character but also as the seiyuu voicing the characterAnd we're back to the initial conclusion. The format you want is CGDCT anime, not streaming. It'd be rude to tell you to pull back your expectations and/or leave, but I also think you have to.