The quality isn't quite as high as The Doctor Falls, but it's very much that feeling of 'I don't even know what to do with myself now.'
Damn. Although that Tumblr post you linked to gives a pretty good insight. I like 'full-on, weaponized bittersweetness'. I can get behind that.

Ok, you're right. He is a cutie.
Take him, make him a girl & a few years younger and that could be Impish Girl. The mannerism, the turns of phrase/mode of speech, everything. It's her as a youtuber and male.