You didn't find an OPM compilation because it's a little hard to make one without seeing the same characters over and over again in the edits. About 90% of the edits are about Garou and Metal Bat. 7:28 The orange one isn't Metal Bat, that's Zombieman after him, the one in red is Metal Bat.
The manhwa is called noblesse, it has an anime, but if you want to follow the story of the manhwa then it's better to not watch it cuz they ereased the main villain completely and I don't like what they did to my girl Raskreia. The MC (the darkhaired one) is a noblesse the highest ranked being for all species that oversees the balance between the strongest species (vampires and werewolves) and the protection of the weaker species (humans) antd the one who he was fighting with was his one and only best friend who was the leader of the werewolves, the girl is his daughter who he had with a human and she too was born a human. The reason why they were fighting was because he wanted to kill all humans as a form of revenge and the MC had to stop him because his job is to protect humans when they are being threatened by the other stronger species
Man I aint watch this in a while. Its Noblesse a manhwa that actually dropped when jjk season 1 started airing back in like January of 2020. Was actually quite popular and i enjoyed it. The dark haired character is the MC hes a vampire if i remember correctly and the werewolf basically snaps cause the girl was killed and the MC is basically trying to stop him. Been awhile but thats what i think happened here