Tinkering Triple Love with Inventing Sisters

Deku is doing some stretches with his legs to get ready for another workout session with the Dryl Princess Sisters while also helping them test out another they came up with, Melissa is right behind him.

"You ready for the test of our forcefield bracelet?" Melissa asked.

"Ready as I'll every be!" Deku answered with a determine smile.

"(Oh, there's that smile of his! My heart just gets happier whenever I see it!)" Melissa thought giggled with her cheeks blushing.

"Okay, so the purpose of this training exercise is to just stand there and let attacks come at you to test how durable the forcefield is. To activate the forcefield, you just need to press the purple button on the bracelet." Melissa explained and points at the purple button.

"Got it, it'll be nice to have something that can protect me without having to worry about going through the danger myself or my clothes getting damage." Deku interested in this gear.

"Then I better go join with my sisters in the control room." Melissa said before kissing him on the lips for a second and leaving.

Deku's face blushes red with stuttering sounds coming out as he felt the lips from one of his three princess lovers again, still having a little trouble processing the fact that he has three girlfriends at once is enough to give him a heart attack yet feeling joy at the same time.

But despite this, he knows very well of what's real such as loving those princesses with all his heart and nothing will change that.

"All the more reason to keep on fighting and save Etheria." Deku smiled at his fist.

Melissa enters the control room where her sisters are doing some typing and pressing some button to make sure this test goes smoothly; they look at Melissa nodding them as a way of saying that Deku is ready which is good news to them.

"Ready to begin, start with bringing up the forcefield." Entrapta said over the microphone.

"Right!" Deku nodded and pressed the purple button.

The bracelet glows for five seconds and a purple transparent pentagon shape shield appears to be the size of his own body though a foot taller and a few inches wider, Deku is amazes of how the shield is form.

"Wow, this is amazing!" Deku said.

"The forcefield came out just as we hoped, but the timing was a bit longer than expected. Thouht it would come out in three seconds." Mei said.

"Perhaps we should recalibrate the circuits to lessen the timing." Entrapta said.

"But the forcefield is holding up well, the energy is stable and it's not hurting the wearer. Thank goodness." Melissa relieved as the first part of the test was a success.

"Deku, how are you doing? Feeling dizzy or hurt?" Mei asked.

"No, everything is fine." Deku responded with a wave.

"Now it's time for the hard part." Melissa pressed a green button.

Two blasters pop out of the floor about fifteen feet in front of Deku which he quickly notices and holds the forcefield bracelet up, the blasters start shooting directly at him as the shots are hitting the forcefield and they dissipate from the impact on the shield while he is just standing there like nothing is happening.

"Forcefield energy still stable, barely drop down by two percent." Mei reported.

"Good, let's try a few more." Entrapta suggested.

Eight more blasters pop up and shooting at the Emerald Knight with the forcefield still holding on for a good while as some of those blasts are flying past him, Deku is amazes of how well this forcefield is holding up despite being gunned by multiple blasters coming at him like he's facing Horde soldiers right now.

The firing kept on going for about thirty more seconds until the blasters stop with the smoke coming out from each and they went back down into the floor.

"Forcefield power only drop about 6.3 percent. Not bad, this could really help out some people when facing some Horde troops." Mei impressed.

"Don't be impress just yet, little sister. We still need to see if the forcefield can take on much more firepower." Entrapta said as she presses a red button.

A tank that looks similar to the ones the Horde uses shows up behind Deku which he soon saw turning around though feeling a bit nervous of this next part of the test.

"Huh, don't you think this might be a little extreme?" Deku asked.

"Not to worry, the forcefield is made to withstand any assaults some may come across such as these tanks." Entrapta believed.

The tank starts charging up its energy with the main gun pointing down right at Deku that is making him nervous some more, but he shook away the nervousness for he believes in the great inventions the Dryl princesses and will see this through to the very end. Just not with the dying and deep serious stuff.

"Cannon is about to fire. Get ready!" Melissa alerted the Emerald Knight.

"Right!" Izuku nodded as he got the forcefield in front ready to take on the tank.

"Fire!" Entrapa commanded.

The tank fires the full-powered energy wave attack as Deku brace himself clutching onto the bracelet of the forcefield hoping this invention will take it, and his hope was realized when the blast hit the forcefield protecting him from harm though it does push him back about four-seven feet.

"So far so good." Deku said grunted a bit.

"Looks like the Forcefield is holding up well, but the energy output is decreasing as it just gone down to 67 percent and still going down though slowly." Melissa said with look of concern.

"Odd, the power output given off by the tank seems to be more powerful than when we last checked almost like it was upgraded somehow." Entrapta puzzled by these readings.

"Oh yeah, I made the tank stronger." Mei revealed bluntly.

"What? Mei, why would you go make it stronger if we were just going to use it for testing like with the forcefield?" Melissa asked gasp.

"The big baby was just sitting there all alone not being use, so I came by and decided to do a little maintenance check with how the gears and circuits are doing and added a little kink to make the blast stronger too." Mei explained her reason.

"Oh, I see! The cannon firing from the tank is working perfectly and it's lasting long too. Well done, Mei!" Entrapta petted Mei on the head.

"Uh, shouldn't we be worried about the forcefield failing as the energy is now done to 31 percent and close to hurting our Deku!" Melissa worried.

"Girls, think we can stop now?" Deku asked worried with the forcefield slowly starting to crack.

"Oh right!" Mei and Entrapta gasped as they quickly stop the tank.

The energy wave from the tank soon disappears leaving the shaken-up Deku with the forcefield showing to have some cracks.

"Alright Deku, that's all for the testing. You can go rest up in your room and leave the forcefield bracelet on the counter." Entrapta said.

"Kay…" Deku nodded as he walks out of the room.

"Well, not how we planned for the test to end, but I think it went well meaning we can go do that special reward we talked about." Entrapta smirked as Mei and Melissa respond with their own exciting smiles.

(With Deku)

"Oh man, that was scary… If the blast continues on, then I might've been dead." Deku sighed as he enters his room.

"Well, at least the forcefield was able to hold off for long and the sisters can make it better." Deku said wiping the sweat from his forehead.

"Bet you would like help relieving from all that stress." Melissa said.

"Yeah, that would be… nice…" Deku's eyes widen of shock when he sees the three princesses of Dryl in his room, sitting on his bed together, and naked.

"Welcome back, Deku." They greeted together.

"Wh-Wh-What are you girls doing here and why are y-y-you naked?" Deku shocked and covered his eyes.

"Because we wanted to show me more of how much we love you, and we decided after that forcefield test we would do it with you here and now." Mei explained.

(Lemon/Sex Alert: Scroll Down If You're Younger than 15 to Skip It)

"But—" Deku couldn't finish his sentence when Entrapta pulls him in with her hair and kiss him on the lips.

"Sorry but this has already started the moment you came into the room." Entrapta smiled and kiss him more.

Melissa starts kissing him on the right going for the neck while Mei went on a little hungry kissing on the left side undressing the top part of his clothes to see his muscular chest and plant some kisses on it.

Deku didn't want what to expect with do something unexpected yet pleasant at the same time as he gives into the love while the girls are helping him out of his clothes, he was too distracted with the kissing on Entrapta to notice until a little later though wants to feel the oldest Dryl sister more.

Then it was Mei's turn to get some kissing on the lips and Deku move his hands around to touch on each of the sisters to make them feel good too, and Melissa got hers soon with his hormone going up from this pleasure. Deku even went on groping onto Entrapta's breasts making her moan of joy.

"Oh my, it looks like he got strong looking sword too." Mei giggled looking down at Deku's cock.

"Sword?" Deku confused.

"Just an expression, go sit on the bed and we'll do you more." Melissa said.

Deku did just that feeling a bit excited and nervous at the same time with the girls seeing his cock is lump and soft about nine inches though it has become a little harden now.

"Time to put that research to the test." Entrapta excited.

The sisters came together with their hands rubbing the cock which is causing Deku to yelp from being touch down there as he never had this before, and now something is heating up from within his body as he let out a few moans and his cock starts to being hardened and getting bigger about 19 inches.

"Whao mama, he must be getting really excited." Mei said.

"Yeah, maybe we can try our breasts next." Melissa suggested as she holds up her breasts onto the cock.

Entrapta and Mei follow her lead grabbing onto their breasts and rubbing onto not just the cock of Deku, but also getting onto each other's making them feel good too with Deku seems to be enjoying this.

"G-Girls, this is too good!" Deku moaned surprise.

The Dryl sisters keep on rubbing their breasts together feeling the heat from the cock onto them meaning the cock is enjoying this too, and Deku leans his head backward feeling something is about to come out from his dick.

"I feel… I feel something is gonna come out." Deku informed moaning.

"Go ahead, that's how men are supposed to do when they feel good." Melissa smiled.

After another moment of the titfucking, Deku screams a little with the cock letting out some white cream stuff out like a mini water fountain surprising the girls as some got on their faces and breasts though Enrtapta suddenly latches down taking the cock in her mouth and drinking the cum.

"No fair, Entrapta! We wanted to feel him in our mouths too." Mei pouted.

"Sorry, looks like the female instinct for this kicked in." Entrapta chuckled.

"Don't worry, we can lick the cum from the cock." Melissa said as they start licking the length.

"C-Cum?" Deku confused.

"It's this white substance the men squirt out whenever they feel good of sexually actions such as this." Entrapta explained a little.

"And this next step is going to make you shoot out even more." Mei pushed Deku down onto the bed and ready herself.

Before anyone could say anything, Mei has already pushed herself down to get the whole cock in her pussy which is very big that is forcing the inside to expand for its size, and she screams a little.

"A-Are you alright?" Deku asked worry.

"Not to worry, this is just men and women do when having sex. The pain is just a little something before it starts to feel good." Mei giggled and her hips starts moving fast.

"When Entrapta brought this idea of having our first sex with you, we were blown away and intrigued in the idea that we just had to go for it!" Mei moaned explaining.

"I was more nervous than intrigued, but in the end, I fell for my desires to have my first with you." Melissa blushed as she goes up to face.

"You have always been the man in our minds, the hope we can always come to when we're feeling down." Entrapta smiled kissing him on the cheek.

Deku felt happier than he ever felt before as he moans of feeing a girl's womanhood for the first time in his life, this sensation is getting him feel so good with the pussy wrapping tightly around his cock that is strongly going through the tight walls as she balances herself with her hands on his chest.

He looks up seeing her breasts bouncing and launch his hands to grab them strongly making her moan louder and exciting, almost like an insane person but happy for sex and love, and Mei felt her body jointing strong of this pleasure.

"Deku! You feel absolutely amazing! Fuck, it's so fucking good that I want you forever!" Mei squealed.

"Mei, you feel good too!" Deku complimented and sucks on her nipples and squeezing them hard.

"AH! You're going to make me cum if you do that!" Mei moaned surprise.

Mei thrusted her hips faster and hard on the riding while Deku decided to move his hips to match with hers, and even use One for All to fuck her harder which makes her feel extra happy.

"Mei, I… I'm cumming!" Deku cummed inside of Mei.

"Wow, you feel amazing filling me up." Mei panted.

"Now it's my turn." Melissa lifted her right leg showing her wet pussy.

Deku didn't waste any time as he pushes Mei off and move into a different position holding onto her leg over his shoulder and thrusted his cock into her pussy taking her virginity away as well.

"AAAH! This is it! This is something that even science could never grasp when it comes to true love!" Melissa moaned happily.

"Melissa! You feel amazing like Mei's, it's so good that I want more!" Deku moaned thrusting his hips faster.

He use one hand to grab onto her breasts moving them a bit and leans in giving her kissing on the lips for a little while, Melissa couldn't think properly anymore with that big meaty cock ramming her pussy through each thrust and her mind can only think of two things right now: Deku and his big cock fucking her pussy to give her more pleasure.

Deku can tell this pussy is different than Mei's but at the same time it also makes him feel the same cute pleasure of a woman, now he is getting a little better thanks to his first time with Mei and passing this onto her second older sister.

"Deku, I can feel your cock getting harder. You're about to cum, aren't you? Go right ahead and cum in me now!" Melissa begged sexually.

"If that's your wish then… here I come!" Deku thrusted faster for several seconds until he slams his hips onto hers letting out the cum.

"Oh yes, such a nice feeling!" Melissa smiled.

"Well done, you have given such happiness to my sisters." Entrapta said with her legs spread by her hair.

"Now it's time for the oldest sister to have her fun." Entrapta smiled a little lustfully.

Deku nods with excitement as he moves up to the crown princess of Dryl aiming his cock at the entrance of the pussy, he pushes himself into the pussy though a little bit slower than the other two sisters but gave her the same force and reaching the wombs like before as well.

"Deku! This is wonderful, I have been wondering what the mating is like and now I have discovered it's the secret of life!" Entrapta moaned loud.

"You're so cute of when you speak of science like that." Deku complimented.

"Forget about science and just fuck me!" Entrapta smiled.

Entrapta wrap her hair around his waist to make her thrusting add into the pleasure and pulling him closer for the exciting pleasure more, she could feel the cock stretching out the inside of her pussy with the feeling making her hair flinches with some cute squealing sounds escaping her mouth with her legs being up and her breasts bouncing wildly in front of Deku.

Deku grabs onto her breasts sucking on the nipples making Entrapta moan louder of joy as she holds onto his shoulder, the young woman inventor loves the new discovering feelings of sex with her beloved Deku with anything involves love.

"Deku! I think I'm gonna cum, I do hope you're about to as well." Entrapta moaned.

"Yes, I'm going to cum with you! Let's cum together!" Deku nodded and brought her in for some intense kissing.

The two lovers continue fucking each other for a long moment until they came at the same time.

(Lemon/Sex End)

Deku is now seen sleeping on the bed peaceful with his three lovers snuggling onto his body together with Entrapta laying on his chest, Mei on the left with his arm between her breasts and Melissa doing the same with his right arm as they pant.

"I love you girls, so much." Deku smiled.

"We love you too, Deku." The Dryl princesses confessed as well, and they kissed him.


KO a new chapter is done and hope you all enjoy it!

Well, that was intense for some gadget inventing and testing followed by some crazy lovemaking for the mighty Deku, the girls really have gone beyond to show him the love within their hearts, and he definitely enjoyed his first time together with them.

KO comment, favorite, and follow through of how this story will go!