Name: Ai Sano Age: 23 Bust: F-cup A kind, older-sister type trainer. She is a major muscle fetishist, and her favorite muscles are the abdominals. She has a natural, drawing charm. She is skilled at spotting weights. She performs the after-stretch carefully according to the user's wishes, but she tends to trace the grooves of the abs excessively. She speaks calmly even when alone in a room, but her heart beats wildly.

Name: Akane Yugure Age: 24 Bust: F-cup A hot-blooded, older-sister type trainer. She is a major muscle fetishist, and her favorite muscles are the pectorals. She supports training with all her might. She gives motivating words while spotting weights. She carefully massages and loosens stiff areas during the after-stretch, but she touches the pectorals unusually often. She becomes quite maiden-like when alone in a room.

Name: Aoi Umihara Age: 24 Bust: G-cup A pure-hearted, older-sister type trainer. She is a major muscle fetishist, and her favorite muscles are the biceps. She always speaks in a soft tone. Her weight spotting is careful and precise. She performs the after-stretch very carefully, but she tends to touch only the arm muscles.

Name: Mika Kanamori Age: 26 Bust: G-cup A seductive, older-sister type trainer. She is a major muscle fetishist, and her favorite muscles are the trapezius. She intentionally presses her chest against the user's body while spotting weights. During the after-stretch, she touches suggestive areas and whispers in a breathy voice to seduce. She focuses her touch excessively on the neck muscles.

Name: Midori Morita Age: 23 Bust: F-cup A shy, older-sister type trainer. She is a major muscle fetishist, and her favorite muscles are the deltoids. She spots weights with precise pressure despite her nervousness. During the after-stretch, she loses her words due to tension, but she is captivated by the muscles and touches them proactively. Her approach to the shoulder muscles is unusually intense.

Name: Shion Fujisaki Age: 22 Bust: G-cup A devilish, older-sister type trainer. She is a major muscle fetishist, and her favorite muscles are the quadriceps. Her weight spotting involves slightly suggestive and lingering movements. During the after-stretch, she is full of sex appeal and uses many feather-light touches. Her approach to the leg muscles is incredibly intense.