I have never heard of a teen library drop-in centre, but I love the idea. With the decline of indoor malls, and especially combined with the brutal winters we have here, there are barely any free indoor spaces for teens or unhoused folk to spend time. Some cities have built beautiful megalibraries (my city is building one now!), and when I've visited them it's been remarkable how free you feel to just exist in the space.

I've been watching the anime based on this! It's really sweet, and the world-building is pretty interesting so far. I heard the LN was really popular, but I haven't read it yet.