SIRO-129first time 18

When I was in junior high school, I was looking at my older brother's guitar, and I felt like rubbing it against his dick, so I did it out of curiosity, but then I got weird and ended up getting some weird juices on my brother's guitar through my panties. After that, I started masturbating with the guitar, and without my brother's eyes, I was rubbing my dick with the body and strings until I graduated from high school. After going to university and moving to Tokyo, my desire escalated further and I finally bought my own guitar at a thrift shop. Of course there's no way you can play a guitar, so of course it's a guitar exclusively for masturbation. At night, after changing into naughty underwear and wearing just a bra and panties, I start masturbating on the guitar while listening to naughty mood music. At first, she used the body of the guitar to gently caress her breasts from above her bra. I gradually move to her lower body and caress her pussy with the guitar through her panties. As the mood gradually increases, she takes off all her panties and bra, becomes completely naked, and caresses her breasts directly with the body of the guitar. Then, as her desire gradually reaches its limit, she caresses her pussy and body directly, going all over the place. In particular, she is in a cowgirl position on the guitar and is masturbating while grinding her hips so that the strings directly hit her vagina. When this happens, the inside of my head is completely blank. I kept going over and over again and was in a state of absentmindedness. Thanks to this, my guitar's pick-up area and pickguard are filled with lewd juices. Even now that I'm an office lady, I still have to play the guitar. This is a masturbation item. Just thinking about the guitar makes my dick tingle. I want to masturbate with the guitar till dawn tonight until I'm about to break down.