Disclaimer: I do not own Fairy Tail.
Waking up to the headline stating that Fairy Tail had burned down their guildhall in a pyrotechnic display was enough to make Dobengal burst into a cold sweat that persisted for the rest of the day. He found himself looking over his shoulder every few minutes, waiting for Rune Knights or reporters to appear asking about his involvement.
It had definitely been a mistake to teach the other fire mages how to use the rainbow fire spell. Definitely a mistake to teach it to Natsu Dragneel, in particular. Now there was a high chance of him going to prison for reckless endangerment of the public.
Wonderful.
It didn't take long for his guildmates to take notice of his poor complexion and overall jumpiness. After a brief conferral amongst themselves, they came to the not-unreasonable conclusion that Dobengal was suffering from overworking himself over the past week of looking after the guild.
Therefore, they decided that a little surprise party was needed in order to put some cheer back into the newly morose ninja.
Spending most of the day furtively setting up the guildhall, and trying and failing to covertly sneak supplies past the open office door, only further worsened Dobengal's condition, as all the poor disguised actions only heightened his paranoia and every little shadow (were those the Rune Knights coming for him?!) sent him spiraling further and further downward.
Finally, his wrist aching painfully from all of the paperwork he'd managed to get completed (in spite of all the interruptions his paranoia had caused throughout the day), Dobengal put his pen down and decided to call it good for the night.
No Rune Knights or reporters had shown up. This thought brought him a small amount of comfort – if no one had shown up so far, they likely weren't going to at all. Maybe Natsu had managed to keep the secret of his newfound technique to himself, rendering Dobengal in the clear!
It was at that point that he walked into the guild hall, where all of the waiting mages jumped out in front of him shouting, "Surprise!" A banner fell from the ceiling, and confetti filled the air.
Dobengal passed out from the shock.
Later, in the hospital, the guild members all apologized to their interim guild master, and promised to clean up the mess on his behalf.
When Dobengal was finally discharged late into the night, it was with an additional diagnosis for carpal tunnel syndrome.