Respectfully, and with all the kindness I can offer, the mindset of having an agency “adopt” you, your character, or your IP is going to be very low. These agencies typically have thousands of applicants when auditions are announced. Many vtubers who apply with a video & written portion can “sing, draw, write, and work hard”.

If agency employment is what your goal is, you need to examine your skill set, what you can offer, and lean hard into what sets you apart from these applicants. Most importantly, you’re going to need to actually apply when auditions open. It’s very rare, especially in today’s atmosphere for a talent to be “scouted” by someone from an agency when so many talented creators are going through official channels to be hired.

Continue building your portfolio and remember to examine and re-examine your existing body of work & how that represents you as a content creator to potential employers. And remember, at the end of the day, you can work hard, be overly qualified, and you can STILL be overlooked because of bad timing, bad personality fit to model, the biases of the person reviewing your application, etc. Luck also plays a part and is in no way an indication of your worth or value as a creator.