@Coralis
those titles come from Japan and most of the ones who titles are that long is because they are sourced from a japanese webnovel system which also has a horrible filter/listing system. So users for that site quickly realized the only way to increase viewer count would be either spread their works online via social media or just dump their entire summary in the title. And that free webnovel system is used by every publisher in Japan as the easiest method to grab up new talent. Especially since they can easily look at the viewer count per chapter and novel to gauge popularity. The authors know people ain't going to waste time looking at every individual page to find stuff they want to read or publish so ya know...
I fully expect whole paragraphs to start appearing as titles for Japanese works.
But for Korea and China, they got the same sort of stuff but their stuff isn't made by brain dead gerbils. So novel writers there got a lot more leeway.