> I think there might be something deeper to it. A lot of manga and anime take place in school as well, and I'd be surprised if it's just because all the artist

> I think there might be something deeper to it. A lot of manga and anime take place in school as well, and I'd be surprised if it's just because all the artists know how to draw is schoolchildren. That's for the simple reason that this is their main target-group. Anime is for kids, because adults don't have time to waste for them. Adults read manga, on train or break-time. And many manga have mature characters and topics. Of course are there are also manga aiming for kids and anime targeting adults, and in the last decades things have changed, because technology as also society changing. Also today there are strong tropes, sophisticates nerds, etc.