I find an Adblocker specially designed for Japanese market. It is called AdFilter. (Maybe only available in Japanese App Store)
Basic Feature: Block ads on a good number of Japan websites including nicovideo.jp.
Advanced Feature:
1. It can set Access Analysis Block to prevent analysis data being sent back to site.
2. It can block social buttons, like Twitter, Facebook, and LINE.
3. It can also block "native ads". App description shows it can "remove the space that has been sent in the ad itself, but it can not be removed in the case has been set size on the site".
4. It can remove some Google Ads. I suppose this is similar to previous "native ads block".
Custom: This option can allow users to add custom filter to block other ads. You can set up a filter based on "Block communication", "Block cookies", Hidden Elements", Content Blocker JSON", and "URL Filter List". There are even more options to adjust.
Each Site: This setting can specify certain sites to apply either default filter, or your custom filter, or both of them, on per site basis.
I just start using Safari Content Block. But I think the feature provided by this app is more powerful than Ad Blocker mentioned in here.
Basic Feature: Block ads on a good number of Japan websites including nicovideo.jp.
Advanced Feature:
1. It can set Access Analysis Block to prevent analysis data being sent back to site.
2. It can block social buttons, like Twitter, Facebook, and LINE.
3. It can also block "native ads". App description shows it can "remove the space that has been sent in the ad itself, but it can not be removed in the case has been set size on the site".
4. It can remove some Google Ads. I suppose this is similar to previous "native ads block".
Custom: This option can allow users to add custom filter to block other ads. You can set up a filter based on "Block communication", "Block cookies", Hidden Elements", Content Blocker JSON", and "URL Filter List". There are even more options to adjust.
Each Site: This setting can specify certain sites to apply either default filter, or your custom filter, or both of them, on per site basis.
I just start using Safari Content Block. But I think the feature provided by this app is more powerful than Ad Blocker mentioned in here.