The issue with logging in with email addresses has been resolved.
Due to issues with external spam filters, QQ is currently unable to send any mail to Microsoft E-mail addresses. This includes any account at live.com, hotmail.com or msn.com.
Signing up to the forum with one of these addresses will result in your verification E-mail never arriving. For best results, please use a different E-mail provider for your QQ address.
For prospective new members, a word of warning: don't use common names like Dennis, Simon, or Kenny if you decide to create an account. Spammers have used them all before you and gotten those names flagged in the anti-spam databases. Your account registration will be rejected because of it.
Since it has happened MULTIPLE times now, I want to be very clear about this. You do not get to abandon an account and create a new one. You do not get to pass an account to someone else and create a new one. If you do so anyway, you will be banned for creating sockpuppets.
Due to the actions of particularly persistent spammers and trolls, we will be banning disposable email addresses from today onward.
The rules regarding NSFW links have been updated. See here for details.
Body rejection, mutation or absorption could be used. His cells could act like less powerful Hashirama's that would overwhelm the patient. So he would be limited into not very intrusive healing like bone replacement. Imagine being asked to replace all their Shinobi bones into reinforced ones...
I'd he gets medic training into applying his regeneration into others it would be too op and too valuable for him to take missions outside. Maybe being able to fix bones of others.