Another edit for @prismgenixz70 with her permission...

leg raises to raise the heart rate and make it visible

From Hazure Hantei kara Hajimatta Cheat Majutsushi Seikatsu ch 12

Practice sketch.

This is what my heart looks like inside me. Steth ring on apex after a workout.

Lea's home

Chapter 3

Tonight was a simple night. After working hard all day both at college as well as in Lea's home, I was exhausted. My heart was pattering fast like the rain, light, quick and steady. I knew just the medicine I needed: Lea. Thankfully, Lea was home early that day.

I run up the stairs in an attempt to make my heart beat stronger but the same light pattering continues, telling me that it only wanted something cozy. A cuddle session, then.

I knock on her door and enter habitually without needing to wait for her approval. I quickly unhook my bra and unbutton the top 3 ones on my maid's uniform and slip into her sofa and dim the lights, letting the day's exhaust take effect on my body. I start to relax, slowly wriggling my toes, loosening my thighs, letting my arms fall and my head plop back into the cushion. From the corner of my consciousness I hear the bathroom door open and a surprised small gasp from Lea. Without saying a word, she opens her drawer, grabs her steth and sits by me, positioning herself between my legs. Placing the earbuds into my ears, she leans into my chest, hear breasts pushing into my torso, and lets out a beautiful sigh. I can feel her own pump reacting in time against my chest, still beating strongly from the hot shower, trying to liven up for me. After finding a comfortable position she finally places the bell on her mitral valve position, knowing it's my favourite spot.

My heart skips a few times, playing alongside hers. I wrap one arm around her head pushing it towards my breast and another around her small waist, and feel her slender frame cuddle up to me. Her head bounces slightly off my chest with my rythm. Her legs straddle me. I feel my heart slowly falling in sync with Lea's and in this moment our hearts beat as one. I am calm. Whole. Content. I breath in her scent.

In a soft gentle voice, she begins talking about her day. I love hearing her talk, especially through the steth. I love hearing her lungs work and find solace in her steady breathing. She trails her fingers along my torso, letting her hand bounce off my pulsating abdominal aorta, and I relish in the feeling it leaves on its trails. I feel her fingers grow itchy, slowly inching towards my boobs. She lingers around my boobs, and stops before going any further. She stops speaking and I know she's waiting for my permission to continue.

I've trained her well. I smile and nod, letting her play with my nipples. I lose myself to the feeling of her long fingers pinching and gently twisting them, making them slightly hard, making my pattering heart skip more. I know she's enjoying this reaction as well.

We stay in this bubble for a while relishing each other's hearts. The day's exhaustion is washed away and I feel recharged for the next day, all thanks to my first muse Lea, who will always hold a special place in my heart, literally. We both call it a day, looking refreshed and ready for bed. As I put my bra back on and button my uniform and straighten out the details, let my fingers lingers a little bit on Lea's apex, and exit her room.

I head to the maid's quarters where my belongings are stored and see Mirin enter in after me, looking tousled up. Tough day for her too I guess.

"Hey Mirin! Rough day huh?" I say off handedly, removing my uniform. I see Mirin sneak a peek at my breasts which I'm sure are still visible from my cuddle session with Lea, but pay it no mind. Non-cardiophiles usually just find my visible heart interesting, and nothing more.

Mirin is a recent recruit, a young blithe 19 year old with a small frame, small enough to fit in a tight hug easily. She seems innocent and naïve, her doe like eyes earnest with the will to do her work thoroughly and eager at any chance to learn. Her small breasts, barely a B cup, aren't able to do much to contain her hard working pump when she's deep in chores, making itself known when she catches small breaks and arches her back while standing. I've seen it cutely pulse away, begging for anyone to notice it. But I'm sure she doesn't think about it that way.

She seems lost in thought, her breathing uneven and in short pants. Her eyes linger longer on me even after I slip my shirt on. That extra attention sort of makes my heart more visible.

Mirin snaps out of her trance and looks at me weirdly, and mumbles a 'yeah...' and makes her way inside the changing room.

Huh. Strange. She's always been friendly with me. I guess today must be a hard day.

I head on home, not realising what I had coming to me soon.

I should've known: Mirin is not who she seems.

Twelve

Pixiv ub1mo

Bonus

Visible Beats for Christmas!

(full video on YouTube)

Merry Christmas! This Christmas, I give you my heart!

With permission from @prismgenixz70 :)

no ekg but a visible beat

Visible Heartbeat

I believe in girls rights to do wrong!!

Long scan where you can watch my heart beat while I breathe slowly.

If your chest was transparent and one could see your heart beating through it... Would you keep it covered up in daily life? Or would you be excited by the idea that people could see exactly what your vital organ is doing all the time? Would you feel more vulnerable knowing that everyone would know exactly where to aim if they wanted your heart to stop beating? And would you still be wearing your crucifix on it, or would you rather not?

This one made me think. I guess I would treat it a little like wearing a bra. At the office I would wear clothing that would conceal my heart. Then, at first, I think I would only reveal my heart to friends and family. Then, over time, I think I would get bolder and start wearing clothes in public that revealed my heart. As it is now I enjoy it when I catch a man trying to look down my top, I think the thrill would be even greater if they were trying to catch a glimpse of my heart. And yes, I think my crucifix would look lovely bouncing over my visible heart.

I think I would feel more vulnerable at first, but as I got more comfortable with my transparent chest I think I would settle into some kind of comfort about my heart being visible. As far as my heart being a more visible target, I always would appreciate accurate aim at my most vital and valuable organ.