>>67152551FuwaMoco. They aren't as open (yet?) about their passions as Pomu is but they have the same if not higher appreciation for Japanese media. From games, anime, visual novels, all the way to Akihabara and idols. They're veterans with huge power level who always try to stay positive and above all else, care about their fans to the fullest. They are professionals to the core and you can trust them they will avoid stepping into any sort of yab. I'm sure they will be able to cheer you up with the unique atmosphere of their streams.
However it's also fine to take this chance to get away from vtubers for a while and maybe focus on previously neglected hobbies or channel your sadness and frustrations into self-improvement. Take a walk, start working out, learn Japanese, so when Pomu comes back you will be ready for her as a better man.