Yeah, Natsu has a point there. Maybe make it his personality that he is something of a socially awkward person, and shies away from social encounters but still remains as a devout battle brother.
Still it stands as such. However, note that ALL Deathwatch are extensively, EXTENSIVELY screened for all manner of prior Warp taint and influences. As such, the Deathwatch would not be handed over to the Ordo Hereticus without an astoundingly solid reason for such claims.
This RP still accepting? I've had a Deathwatch needs that's been itching for some time now, since our local game fell through.