Sorry,Hero Mask 20 is not avaiable yet. We will update Hero Mask as soon as it is released.
If you want to read new chapter of Hero Mask at the first time,you can subscribe it. We’ll send your the email as soon as Hero Mask 20 updates.

Have more fun on facebook:

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Or enjoy fantasy shoujo moments on tumblr:

https://onlyshoujo.tumblr.com/

You can read some other great manga to kill time