The group immediately formed up and attacked.
Koneko, Kiba, and Issei became vanguard while Akeno prepared spells. Rias was at the very back, observing the battle from afar. She wasn't going to participate unless absolutely necessary, but if something went wrong, then she could easily step in.
"Koneko! Be careful!" Kiba said, swinging his blade. Koneko was a close-range combat specialist and would always rush forward first. Her small size gave her speed advantage over her opponents, but her small stature didn't mean that she was weak.
"Hmph!" The Rook shouted as she dashed towards the nearest enemy and kicked it away. She didn't even break a sweat as she did it again to the second goblin.
"Oh! Koneko-chan, you're so good!" Issei cheered for the petite girl.
Lightning fell as Akeno finished her spell, making the goblin panic.
Kiba followed after her. With his light movement, he dodged the incoming club attacks. He thrust his sword at the nearest goblin, then swung it to the left, right, and back.
A second later, two goblins fell on the ground with gaping wounds in their stomachs. Issei had also defeated a few of the monsters himself, although he wasn't as efficient as Koneko.
"We win!"
Still, the joy contained in his voice was infectious and spread through the rest of the group, causing them to laugh and cheer.
However, Rias' serious voice stopped everyone from getting carried away. "No, not yet."
She looked at the narrow path hidden behind a big rock in front of them, and pointed at it, "There's a path over there. We need to investigate this place. How could there be a goblin in here, and what this place actually is, we still don't know."
The rest nodded and they proceeded through the narrow path.
After walking for ten minutes, they found a large clearing with four doors on each wall. One had a signboard saying, '1st Floor Boss Room'. Another sign read 'Stairway to 2nd Floor'.
A third sign said, 'Treasure Chest'. The last one said 'Trapdoor'.
"There are four doors." Rias muttered.
"My, my... What are these doors?" Akeno asked, her voice was laced with curiosity. She seemed interested in this new discovery. Koneko, who stood beside her, looked up and said nothing.
"I don't think it is safe here..." Issei said. "We should leave."
"No." Rias shook her head. Her eyes narrowed slightly as she thought about what could happen if they didn't check all of the rooms thoroughly.
There might be danger lurking inside that had to be destroyed immediately, and they didn't know anything about the place so they had to investigate.
"This place might contain a dangerous being or a trap. We need to clear this place and destroy the source of danger, then we can leave."
"But..."
"We're doing this. First, let's reach the boss room."
They all agreed. With that decided, they headed to the boss room.
It was a spacious hall that had no furniture or decorations, only a single goblin stood in the middle. This goblin was two times bigger than normal goblins.
It looked more menacing than the ones outside. The creature growled and roared loudly, "Gruaaah!"
Everyone was focused on the monster, except for Kiba who realized something.
"The door disappeared!" He exclaimed.
"Huh? You're right!" Issei yelled, he ran towards the wall but found nothing. No matter where he searched, there was no sign of a door. "Oh crap! What should we do? We're trapped here!"
"Calm down, Ise-kun. We can't afford to panic." Rias calmly spoke as she observed the area. "Let's defeat it and then we'll figure out what to do. Possibly the exit will return."
"I don't like this. It feels like we're being toyed with." Kiba muttered as he drew out his sword. "It's too convenient. And if we defeat it, we'll find the way out."
"We don't have any choice, so we can only move forward. Let's go!" Rias said and the battle started.
***
"Oh, they are doing great." Cain, watching the scene from a window in front of him, grinned.
This was a part of the system that he had created during his preparation period.
After he created the dungeon, Cain could observe what happened in the dungeon, check the map and status of his dungeon. The window showed him how Rias' group fought against the Hobgoblin.
Just like its name, Fun Fun Dungeon!, this dungeon was made to imitate RPG games and anime. The enemies were weak monsters, created to be a tutorial and a way to experiment his Coin farm.
The concept was simple: A fun dungeon where adventurers could have a safe adventure without risking their lives.
"System, explain to me about the Dungeon Maker System."
*Ding*
Dungeon Maker System: It's a system that helps the King with dungeon management and administration. This system will assist in the growth of the dungeon and help with its development.
The Dungeon Maker System has many features. He could freely make any dungeon he wanted as long as he had enough Coins, the system would automatically do all the work for him.
And now, the cast of Highschool DxD was fighting the first boss he set in a 'Choose one of the four doors' trap he set for fun. Of course, they wouldn't get hurt and die.
After all, there was no way a Hobgoblin could defeat a group of Devils, with one of them being a high-rank one.
***
"Rrrruuuoooo!" The Hobgoblin roared, raising its club. Kiba ran to it, slashing his sword at its leg.
The creature stumbled backward as blood splattered across the ground, but it managed to stay standing.
Issei rushed to the monster, his fists clenched tightly.
"Boost!"
He swung his fist, punching the monster's face, forcing it to step backwards.
At perfect timing, a white-haired girl jumped and punched it in the stomach. It caused it to groan and cough.
Akeno and Rias were on standby. Rias was ready to help if needed.
"Grooooaaaaa!!!" The Hobgoblin roared, lifting its arm and smashing the ground.
Issei, Kiba, and Koneko were sent flying backwards. The Hobgoblin stood tall again, brandishing its club and roaring.
"Let me finish this!" Rias stepped forward, and summoned her demonic powers.
Red lights appeared around her body, forming a magic circle. Then, a dozen red balls shot out, piercing through the air towards the hobgoblin.
The beast was unable to dodge and it roared loudly before falling to its knees.
Rias sighed. "It's over."
"Yay! We win again!" Issei shouted.