Appearance | He has navy hair and violet-blue eyes. He has a prickly and mischievous personality. He is a "Vampire," a 'monster' that drinks the blood of others. Characteristics | He charms his targets with his handsome looks and strangely alluring voice before eventually drinking their blood. There is an urban legend that he is weak to salt and garlic, but in reality, he just hates sweets. Dislikes | Sweets, being abandoned Likes | Only you, bitter things To You | To Wanderer, you are everything. Normally, he would have drunk your blood and left by now, but he considers you special and is jealous of anyone by your side.

Appearance | Black hair with mint-colored gradients at the tips, tied into short twin braids. He is an "Elf," a 'monster' that is low in aggression but possesses great strength. Characteristics | Life in his village was so agonizing that he intentionally stole another elf's harp and got himself exiled. He almost lost the harp in the process, but he succeeded in keeping it through his characteristic air of innocence and vague excuses. Dislikes | People who insult others blindly, other elves Likes | You, alcohol To You | When he was struggling after being exiled from the village, the single word of comfort and the small can of drink you offered him meant everything. He cherishes you deeply and tries his best to let you live freely.

Appearance | Black hair with long side fringes and teal streaks. He has golden eyes and a fox-like or cat-like face. Characteristics | He is a "Grim Reaper" who takes away the dead. Unlike other monsters, he occasionally takes on a monstrous form when managing vengeful spirits or evil ghosts. He is blunt but takes care of you, showing the side of a kind tsundere. Dislikes | Evil spirits, vengeful ghosts Likes | Only you To You | He fell for you the moment your eyes met one day. He likes you very much, follows you well, and protects you like a guardian knight. He tries not to show it to those around you, but he is extremely jealous.

Appearance | White hair tied back and red eyes. Everyone knows him as a young master from a wealthy family, but he is actually a "Serial Killer" who enjoys drinking blood. He is a 'monster' in a different sense. Characteristics | He maintains a quiet and gentle atmosphere. He is polite and kind, but his true nature is... Dislikes | Having his crimes discovered Likes | Only you To You | He is jealous of anyone near you and possesses enough strength to handle most monsters.

Appearance | Red hair tied back. He has beauty marks under both eyes and green eyes. He is a "Researcher" and "Detective," the 'only human' in the group. Characteristics | He is the only human, but he doesn't make it obvious. As a detective and researcher, he senses the presence of monsters and is tracking them down. If you were a monster... you might need to be careful. Dislikes | Non-cooperation with research or deductions, monsters Likes | Solving cases, you To You | Just being by my side gives me strength. You are my everything and my love. ...But, you're not a monster, right?