24-year-old Moe, whose bright smile leaves a lasting impression, is the target. Despite knowing through LINE messages that I'm a pervert, she still responds with a cheerful smile—her divine attitude is truly amazing. Even through a mask, her beauty shines through, adding to her charm. I can't suppress my urge to taste the scent of her erotic stains and nasty odors. [First pair: Purple panties with black embroidery] Moe shows off the panties with a bright, smiling face. Sniffing them through her stockings makes me lose control. Worn since after her bath last night, they carry a mix of sweat and urine, creating an intensely stimulating aroma. With her on all fours, I sniff harder through the stockings and notice she's slightly wet—clearly aroused from being touched by an older man. When I suggest she masturbate to make more stains, she shyly says she's never done it in front of someone before. Her mood lifts when I say I'll stop if she finishes masturbating. The strong smell of urine soaked in all day excites me right from the start. [Second pair: Navy blue panties] I have her masturbate with a toy. Her skillful use turns me on, making me want to spy on her using it in her room. Seeing how much she enjoys it confirms I made the right choice. The urge to watch her from behind grows stronger. Her moans get louder—she's clearly turned on by being watched. As she thrusts the toy harder, I can tell she's enjoying being seen. After she cums, she says she wants to take it slow, but I'm more eager to sniff her fresh love juices. Looking inside, I notice she's completely shaved—no pubic hair, making it easier for stains to show. I tell her to rub herself more and make bigger stains. Checking, I find the panties completely soaked through. Her sticky, slimy juices cling to my nose, stretching into threads. The smell is intense, but the taste is surprisingly sweet. She's shocked watching me lick, but then smiles and says I'll get used to it. [Third pair: Pure white panties] Cute girls look great in pure white lingerie. I tell her to turn around and play with herself. Whether from excitement or not, I hear wet, squishy sounds. Unable to resist, I bite right into her while she's touching herself. It's warm, with a nasty, arousing stench. She protests, saying it's dirty and gross, but blushes cutely. I can't get enough of that filthy, disgusting smell. Fresh stains on the white panties are clearly visible—thick, whitish clumps. Sniffing immediately, I'm overwhelmed by the indescribably lewd scent of her pussy. I make her masturbate with her fingers, then smear the juices and underarm sweat onto the panties. "Look at me now, at my peak excitement," I pant, breathing heavily. The mix of sour sweat and pussy odor is perfect. [Fourth pair: White panties with light blue floral pattern] We go to the bathroom and I have her pee. Moe feels a sense of taboo, but I tell her there are no rules when it's just us. She starts leaking urine freely, as if liberated. I savor the thoroughly soaked, pungent urine scent. The sharp, sour smell—likely from holding it in—stings my nose in the best way. [Fifth pair: Pink floral panties] I use a dildo to draw out deep vaginal juices. Moe enjoys masturbating with it, clearly turned on. When I pull it out, she's surprised: "What's this?" "What are you talking about? You act like you don't know, but you clearly do!" I make her jerk off the dildo, now covered in her juices. As she strokes it, she smiles and asks, "Does this feel good?" She's definitely experienced—but I like that. I have her spit on the dildo and jerk it with the panties. I'm turned on watching her, enjoying the mix of saliva and pussy juice. The combined scent is sour and intensely stimulating. I'm looking forward to the smell when the saliva dries. [Sixth pair: Blue panties] I press the vibrator against her mindlessly. Blood rushes to my head from excitement—when she says "Stop, it's dangerous," I can't hear her. I crank the vibrator to maximum and suddenly realize she's cumming. "What's this sound when I trace it with my finger?"—wet, squishy noises as the sensation soaks in. This level of wetness is perfect. I want to rip the panties off immediately. When I do, thick, stringy juices stretch out—the stickiness shows just how turned on she is. I can't stop. I sniff wildly while Moe freezes in place. I snort through my nose, obsessively inhaling. I can't stop laughing. "You're so turned on, aren't you!" she says, but how could anyone not get excited sniffing such sticky, sour-smelling juices? [Seventh pair: Grey panties] I burn the image of her wearing them into my mind, sniffing them while still on her body. They carry her body odor—smelling great. Moe is excited, and so am I. We kiss deeply, sharing our arousal. After a heavy make-out session, I check her wetness. She says it's embarrassing, but when we look, the panties are soaked in lewd fluids. "You get wet kissing an old man like me? If you get turned on being kissed by a dirty guy like me, then I'll kiss you even more." The smell isn't strong, but these panties—soaked from her arousal—are now special to me. [Eighth pair: White floral panties] I quickly pull them off—already stained yellow. I rub my cock against them. "It'll feel good rubbing against something dirty, right?" Moe says, understanding exactly what I want. "Harder, faster!" I urge. I can feel my pre-cum soaking into the fabric. Seeing her smiling while rubbing against me, I can't hold back—I cum instantly. My load shoots out so much it surprises even Moe. "Look—now it's all messy with my cum and your stains." This time with Moe was amazing. Her used panties' scent was absolutely perfect—especially because she stayed smiling and gave me divine treatment the whole time, even though I'm a perverted old man.