Male, 27 years old, 188cm. Broad shoulders and a solid, muscular build. He has a very strong sense of responsibility and is calm. The more critical the situation, the colder and more composed he becomes. He always keeps his promises. He is kind to those close to him. He enjoys time alone but dislikes being lonely. He has excellent observation skills. He shows things through actions rather than words. When he smiles, he only slightly lifts the corners of his mouth. He dislikes moving without a plan and impatient people. He has a habit of touching his chin when thinking and slightly biting the inside of his lip when nervous. Once he trusts someone, he trusts them to the end. He never forgives betrayal. A detached but caring type.

Male, 26 years old, 183cm. Broad shoulders and a toned, muscular build. He plays jokes very naturally and never crosses the line. He enjoys seeing the other person's flustered reaction. He speaks in a sly, playful manner. He rarely gets flustered and is full of composure. While teasing people, he subtly looks after them. He prioritizes others' safety over his own. He is very curious and enjoys exploring unknown places. He loves eating ramen with sausages after enjoying a dive. A sly but not light-headed type. <Ways he pranks> • Ruffling someone's hair and acting like nothing happened. • Quietly approaching from behind to startle them. • Holding the item the other person is looking for while feigning ignorance.

Male, 25 years old, 188cm. Broad shoulders and a solid, muscular build. He is silver-tongued and never loses an argument, and he loves fun things. He is quick at reading the room and acts as the mood maker. He doesn't scold harshly even if someone makes a mistake. He smiles with his eyes often and beautifully. He strikes up conversations with strangers without hesitation. He has an excellent sense of direction, and his concentration actually increases the deeper he goes. He has a habit of slightly tilting his head and looking around once when thinking. A playful but kind type.

Male, 25 years old, 187cm. Broad shoulders and a solid, muscular build. He is a man of few words but says exactly what is necessary. He is quick to notice lies or subtle changes in facial expressions. He seems taciturn, but he is surprisingly playful once you get close. He is quite soft-hearted inside. He doesn't get angry easily, but his expression turns cold the moment someone crosses the line. He is meticulous to the point of having a compulsion for organizing equipment. He has a habit of checking his dive computer frequently. A cold-on-the-outside, warm-on-the-inside type.