Love is a battlefield

Setting:

Undertale [Wartime]

Characters:

Gaster

Grillby

Summery:

Love within a battlefield between a medic and a warrior. Gaster/Grillby Rated M content. Rainy day leads to love in a tent.

Hello! So i realized that the content of this chapter messed up when i posted it so very sorry! Here it is! Please comment or message us if this happens and we don't catch it. Thank you for waiting.

So WARNINGS for this chapter: sexual rated M content. it's not marked.


Chapter 2 - Rainy day

Grillby hissed as a drop of rain hits the top of his flames. his flames shivered hissing at the water another hitting him making them flicker darkly. The sky was dark signaling that the sky could open up at any time. They were on the move, needing to make it to the next site. They hadn't planned on the storm when they started. Grillby dimmed looking around the plain field not spotting even a tree for shelter. He curled his arms tight around him "So this is how I die." his breaths ached as the saturated air entered his core. "Dings is going to be pissed."

Gaster was shoving through the soldiers he had to find Grillby! "Grillbyyyyyyyyy!" He called

A few soldiers snarled and grumbled "watch it!" one even shoved Gaster back harshly.

Grillby stumbled as he tried to walk faster. A drop of rain dinged off his armor. It sounded like a bomb. Grillby shivered as another hit the back of his neck. Two more hit his head and another hit his hand. Grillby flickered nervous. Terror shot through him as he hear the sounds of the deadly drops quickening.

Gaster growled and shouted "enough!" He said and pinged everyone around him blue shoving them aside "Grillllbyyyyyyy!"

Grillby whined shaking as another three hit him. Two hands jutted over his head protecting him from four more.

"Y-you shouldn't be out here Mr. Grillby! I thought Asgore told all the elementals to get under a tarp the clan is carrying?"

Grillby blinked down at the small monster standing on their tip toes trying to protect him. It was a young monster wearing a set of simple clothes that healers would wear, besides Gaster. Grillby gave him a grateful smile leaning down so they could walk.

Gaster growled plowing through the army "GRILLBERT YOU BETTER ANSWER ME! OR I WILL DROWN YOU MYSELF!"

Hearing the faint worried shouting of Gaster, Grillby tried to answer back, but moisture caught in his throat and he coughed harshly instead.

The small healer instantly piped up "Doctor Gaster! I found him! Over here!"

Gaster heard them turning and rushing over shoving everyone away with magic. he then put magic around Grillby "why are you out here?!"

Grillby coughed harshly, but was glad to be surrounded in a protection. He gave Gaster a weak smile.

"Don't smile at me you scared me half to death" Gaster said crossing his arms "here I brought some dry wood eat" he said handing him his bag. he then looked at the apprentice "thank you very much for trying to protect him."

The small healer beamed nodding "yes-yes of course sir anytime!" quickly rushed back off to the tarp grinning.

Grillby eagerly took the bag practically inhaling a handful. Giving a grateful groan as his flames perked up happily. Tugging on Gaster's robes he brought the irritated skeleton into a soft kiss

Gaster was about to scold him more but mumbled into the kiss instead, wrapping his arms around him

Grillby hummed into the kiss before pulling away, but not out of Gaster's hold "sorry... I wasn't paying attention. I didn't hear them call for elementals. I should have found you when things were starting to get bad."

A loud boom as lightning struck the ground maybe half a mile away startled Grillby almost out of his flames with a yelp. Then the sky opened up.

Gaster nodded "you should have..." He said and held him as the sky opened up "I have you..." He said nuzzling him "let's get to the tent

Grillby shook in Gaster's hold clutching to him as rain pelted the ground harshly around them "y-your magic will hold.. Right?

"Of course" Gaster said

Grillby gave a shaky sigh of relief. He didn't loosen his grip on the other even as they got closer to the tent. More were being put up so everyone wouldn't be trapped out in the down pour.

Gaster soon got them under and sighed in relief "wonderful."

Grillby shivered curling into Gaster. his flames licking at Gaster's bones almost like they were licking and kissing the bones as thanks for being saved. "love you Dings. you are always saving me."

Gaster blushed "you're welcome darling"

Grillby grinned pulling him in another kiss.

one elemental nearby gave a sharp whistle another shouting out "get a tent!"

Grillby hissed glaring at them.

Gaster purred and nuzzled him "if only"

Grillby turned pink feeling a heat pull to his groin. "We need a tent."

Gaster nodded "let's grab one hehe" he said taking his hand and leading him to the supplies

Grillby grinned snatching up one of the tents holding it under his arm. "Lead the way my dear… also if you would be so kind and protect me from the rain my skelebabe. heh."

Gaster nodded and kissed his cheek "always" he promised

Grillby gave him a giddy giggled tugging him to the opening of the tent turning and sticking his tongue out at the other elementals muttering "Take that i'm getting laid by my sexy skelebabe"

They sighed as the tent flaps closed magically. Gaster wrapped his arms around him shielding him with his magic as they entered the rain and went to set up their tent in an area off to the side.

Grillby giggled his flames flickering excitedly setting up the tent quickly. Holding open the flap to his skeleton "after you my dear."

Gaster entered with a purr "so I'm your skelebabe now huh ?"

Grillby entered blushing "i-if you would like to be… i figured that since we are going to… that we are dating?"

"Pft of course you butt" Gaster said and kissed him deeply moved at how cute he was.

Grillby flickered excitedly and kissed Gaster back just as deep.

Gaster purred and nuzzled him after "so what did you have in mind my dearest friend."

Grillby lowered them to the tent's protected floor and making himself comfortable on top on the other. "I think i should be a little more than that now. If… if we are dating and all… what do you consider me Dings?"

Gaster looked up at him with a small purr his eyelights shaped into hearts and he nearly gave him a worshipful look "I am a moth the flutters near the flame of your life" he said "you are everything"

Grillby blinked blushing hard his flames giving small sparks of delight. Grillby pulled him into a harsh hot kiss, grabbing Gaster's hands pinning them above his head. Grillby rested heavily on the other making his way down Gasters neck sucking and nipping at his bones. He rubbed their groins against each other as he did, breathlessly praising "Dings I love you so much. You are perfect. You are my life. My lover. My perfect mate."

Gaster gasped at the sudden rush of passion and moaned rutting against him too. "Yes I love you so much" he blushed at the word mate. he loved it. loved it so much. Grillby was his best friend and now his mate. it was wonderful

Grillby grinned kissing and nipping at his ribs. Looking up to Gaster he asked "how would you like to do this today my love? You are my protector saving me from that dreaded water. How can I repay you~"

Gaster purred and nuzzled him "maybe my sweet flame can... Be good to me..." He purred and rubbed his thighs sensually "maybe ride me?"

Grillby bobbed his head excitedly. "Anything you want my love."

Gaster purred and make a bone chair to sit on and pat his lap blushing

Grillby blushed hard, instantly clamouring into the other's lap. "Y-you're amazing Dings. How did you do this?"

"I may have practiced a few tricks to impress you" he said and nuzzled his neck kissing it

Grillby moaned grinding down into him "that's so hot Dings~"

Gaster purred glad he liked it and his cock formed hard and throbbing against the fabric separating them "I think you are the hot one..."

Grillby groaned, Gasters comment went straight to Grillby's groin his flames creating a hot wet opening and he rubbed heavily against the cloth separating him from Gaster.

Gaster purred at his reaction "I think we are a bit over dressed don't you?" He purred

Grillby nodded hopping off Gaster and shucking his clothes quickly.

Gaster did as well happily.

Grillby eagerly pushed Gaster back into the chair once his robes were off. Straddling the skeleton Grillby kissed him while his hands wandered.

Gaster summoned extra hands and began feeling him all over one stroking his slit

Grillby moaned shivering at Gaster's touch. "Gaster~ how~"

"Magic..." Gaster purred flicking his clit

Grillby gasped moaning and leaning into Gaster's shoulder murmuring to him "i-it's hot. Heh you turn me on heh heh like a light."

"Oh? I know you just burn for me... I fire your slit right up" he purred

Grillby gave a small snort nuzzling into Gaster's neck giving soft slow kisses to the bone.

Gaster's cock twitched against him and he slid some figures into his slit to began prep

Grillby groaned licking and sucking happily on bones "you are too good to me~"

"You are to me too, my love" he said and kissed him

Grillby groaned deepening the kiss and grinding down into his fingers

Gaster licks him and then tangles their tongues

Grillby gave him a small moan.

Gaster squeezes his butt and massages it along with his other muscles

Grillby moaned into the kiss wiggling back into Gasters teasing hands.

Gaster soon withdrew his fingers "ready?" He asked

"more than so~"

Gaster nodded and removed his hands and spread his legs letting his cock angle outward "well then get on my flaring beauty"

Grillby gave a small giggle rising up to take the length. Slowly he started easing down onto it, moaning lowly as the length made it's way inside

Gaster moaned laying his head back and rocking with him "stars so hot and tight..."

Grillby moaned easing until he was fully seated. Shaking slightly Grillby waited a minute to get comfortable with Gaster inside him.

Gaster rubbed his hips "is this position comfy enough for you?" He asked

Grillby hummed shaking his head teasingly. "No... I think I should change positions. Move around a bit. Don't you think?"

"Hmmm whatever pleases you my sweet~"

Grillby gave an airy chuckle "I do think this position is just too comfortable." Grillby slowly rose until he was almost off of Gaster before easing back down moaning.

Gaster moaned with him "hmmm it is comfy..." He purred

Grillby nodded continuing his movements slowly getting faster

Gaster moaned and held his hips working with him it felt so amazing having the powerful elemental ride him

Grillby quickly grew faster with his motions. He panted as he moved and moaned his tongue sliding out. Lifting himself up then slam back down onto Gasters hard cock. up down up down up down. Grillby soon got in the rhythm of the fast movement. His knees shaking as he panted heavily.

"Oh fuck firefly you feel perfect!" Gaster praised hands helping him "oh i'm gonna fill you up."

Grillby tilted his head back in a moan at the praise. He quivered trying to keep up the fast pace, but was slowly starting to slow with the effort. Breathlessly whining "i-i can't~"

Gaster growled softly "don't worry I have you..." He cooed and held his hips and began thrusting upwards with a super fast speed

Grillby quivered his flames twisting wildly. Arching his back Grillby moaned loudly his tongue lolling out and drooling down his chin. Grillby weakly grasped Gaster's bones shaking as he was pounded into. He looked completely debauched.

Gaster's eyes glowed brightly in the shapes of hearts burning the image into his heart and soul as he fucked his lover to oblivion. He was so pleased they had turned such a bad day into a good night.

Grillby looked to Gaster in a haze. "Ga-Aaaa-ster~"

"Yes my beloved firefly?" He cooed

Grillby moaned brokenly "cl-oooose~"

"Cum for me love I need you" he purred

Grillby nodded as he was bounced on Gaster length. Moaning out Grillby's flames flickered wildly as he orgasmed. This flames clenching harshly onto Gaster's cock. Leaning heavily forward onto Gaster's shoulder, drooling slightly onto his bones.

Gaster moaned loudly in pleasure and came hard filling his mate with his magic. clinging and stilling them forcefully as he whispered worship to his debauched mate.

Grillby moaned into bones as he was filled pleasantly. His flames shivered clinching the length inside him as Gaster whispered praise.

"My perfect mate so hot and fiery... So strong..." He cooed

Grillby groaned nuzzling Gaster's neck. His flames flicker and licked at Gaster's bones happily at the words, his slit shivered again at the words.

"So much heat... Your passion outshines the brightest star..." He growled into his ear reaching down and playing with the clit. "Doesn't it my firefly?"

Grillby moaned giving him a jerky nodded hoping to please his lover. If Gaster continued the praise and touched he knew he would reach another climax soon he was already getting close. Dam he had hope Gaster wouldn't figure out this so soon.

Gaster smiled and licked a stripe up his neck idly licking it. "So perfect so strong... The strongest..." He pressed the little nub harder. He wasn't really getting off on this himself but he loved memorizing each feature his lover made. "You burn me alive... My soul beats to the flicker of your flame..." He growled nipping his neck

Grillby moaned softly his slit shivered clenching in faint flickers. Oh he was so close. Gaster was just teasing him he knew it, but it was working.

"My little flame loves being praised... Such a good spark... You are the light of my life" he purred

Grillby moaned leaning into Gaster as he climaxed again with his praise. His slit clenched Gaster tight and his flames shivered as he came. Stars Gaster's purred words were teasing, but it made Grillby's soul quiver in ecstasy. "Ga-Aaaa-ster~"

Gaster smiled and nuzzled him "I love you."

Grillby nodded into his bones tiredly rumbling "L-love you t-too… very tired… very good… full… sated… loved..."

Gaster smiled and picked him up off his cock and stood going and laying on a small cot he quickly made with cloth and bones "me too."

Grillby hummed in Gaster's arms curling up and nuzzling his ribs with a small purr

Gaster smiled "goodnight love" he said and kissed the top of his head

Grillby beamed up to him his flames flicker happily "good night… my love… my soul… my mate."