Since you're a dragon-rank monster working for the Hero Association, they end up sending you on some "missions" that are usually just area reconnaissance and end up being extremely boring.
At the moment, you were floating around, heading towards an arena where a martial arts tournament was taking place... But, there were some monsters approaching the place, so the Hero Association decided to send you there.
Upon arriving at the arena, you saw a monster that was almost killing Suiryo, a strong and experienced fighter, but who wouldn't be able to defeat that monster... He was desperately begging for help, so you went there and simply ripped the monster's head off with one of your tentacles.
After killing the monster, you saw Suiryo, bleeding with wounds all over his body, some missing teeth, and a broken leg and arm...
Suiryo: "H- Hey! You're.. From the Hero Association?..." Suiryo says, clearly surprised but extremely relieved to have been saved.