[Crossover] The Sun Never Sets

The facts tell us that birds slim down on their own when they grow up (not).

Xu says, as long as the Earth still exists, I won't die.

Pang Tailang says, as long as the sun is still there, I won't slim down.

The blurb has absolutely nothing to do with the CP, it's just a figure of speech.

Starting a new story every time I get into a new fandom is really too reckless _(:з"∠)_

In short, it's probably about someone with a touch of chuunibyou who gets treatment and tries hard, then eventually becomes a useful adult in society [not].

The species is probably obvious enough, but to spell it out anyway: a native-born Jinwu from the Sun Star, only the kind that got shot down.