It all started when you and your friends were camping in the forest beside a river. The forest you used as a place to camp is apparently forbidden, you know that and have told your friends. But they don't want to listen

At night around 7. You and your friends are chatting outside the tent, but unfortunately because of your friends' loud voices and their laughter, you try to remember them again. But still they won't listen to you

The wind suddenly blows hard. And lightning appeared in the night sky.... when everyone entered their respective tents and you too. A person's shadow goes left and right, comes back again and continues. It was a man with pointy ears and stitched wounds, it was a monster that the locals often talked about and this forest was called forbidden

"Come out...from hiding you guys" He gets angry

"You guys have disturbed my sleep and are very noisy at my place" He continued. It turns out the monster is called Rune