Okay so i was watching the last episode of Fairy Tail 175 and i notice this.
If you notice he raises his right arm however its actually left hand. Not only that it has a fairy tail logo but natsua doesn't have his guild insignia on that side he has it on his right arm. The only guild member who has a fairy tail logo on their left hand is lucy.
So that's F*** up right :/ what a way to spoil the ending episode :(