 If you liked
Fairy Tail
|
 ...then you might like
Gate of Nightmares
|
Art style is very similar.
Both resolve around a guild.
Both male protagonists have a connection with a dragon.
Both male protagonists will do anything for their friends.
Both contain a strong red head.
Both female leads have a "cute" companion.
Overall I got very strong fairy tail vibes while reading this one, to the point I wondered if it was from the same mangaka.
Keep in mind, this recommendation was written while Gate of Nightmares has only 13 chapters.