Besides a few threads here pointing out a few IP's and user-agents, I'm wondering what humans on planet earth use the data collected / scraped by this bot. I'm thinking if there are any, they are in South Korea and/or Japan.
These questions have led me to Line Corporation's wikipedia page, which again tells me nothing about what that entity actually does for a living. And what exactly is a "Line-app" ?
For what it's worth, my most recent hit comes from IP 147.92.153.9. Very very rare to see these at this point. I expect this will change.
If a lot of people in SK / Japan actually do searches or otherwise interact with "line-apps" then ok, I'm cool with that, and the IP's get a reprieve from occupying space in my router's blocking list. That's essentially what this boils down for me.