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English
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Published:
2025-05-07
Updated:
2026-07-20
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68/?
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Hundred Line: Friends with Benefits Route

Summary:

SPOILERS FOR LAST DEFENCE ACADEMY FIRST SCENARIO.

A new route emerges...

It seems that hemoanima can have another side effect if things get a little hot and heavy, and after falling from a roof, Takumi wasn't the only one having strange symptoms after being unconscious for a week.

Everyone is a little antsy, and not in the 'we're fighting a war for humanity' way, and more of a 'spring break' way. Sirei also suspiciously ran away to 'check on how the paint is drying in the defence room'. Left to their own devices, how will the warriors at Last Defence Academy cure their heated blood...? And if you've read my previous Master Detective Archive's work, you know what you're getting into.

An erotic comedy where YOU can help shape the choices Takumi makes, and in time, be able to pick them yourself, but for now, help shape them.

Can you lead us to the fabled Sandwich route?

I ran out of tags, but I promise you, there's like an 80% chance you'll find what you're looking for in here, somewhere, if you make the right choices...and, y'know, I've got that far.

Also, for the sake of this story, all characters are 18 or older.

Notes:

Kodaka's back, and so am I.

Last time, I thought it'd be fun to use a mystery labyrinth as the catalyst for a story, and this time, I was thinking, ' What if there was a route where everyone just kept hooking up?'

And here we are.

Full Disclosure, I've only got 10 endings so far in LDA and so I don't know *everything.* Much like every route, this 'route' technically doesn't have spoilers, but also does, because that's just how LDA rolls. Just ensure you've gotten the credits at least once before reading this story.

Chapter 1: Route 0 prologue: Between friendship and romance

Chapter Text

Hiruko and Takumi sat looking at the wall of flame illuminating the dark, and Takumi found his heartbeat suspiciously present in his chest as his gaze wandered from the eternal flames to the sharp-featured girl sitting beside him, those sharp features uncharacteristically soft as she gazed outwards. 

 

‘’Kiss me, Takumi.’’

 

Takumi blinked. 

 

That almost sounded like she was asking Takumi to kiss her, but that couldn’t be right, could it? After all, this was Hiruko. The same Hiruko who kept mocking his plain face and would frankly put a leash on him if she were allowed- a train of thought that wasn’t helping in the slightest. The breath caught in Takumi’s throat as she turned to look at him, and it was hard to believe it was the same girl from three minutes ago. There was something in her eyes, the same look he’d seen in Nozomi’s eyes…But that was impossible! It… was impossible, right? Nah, this was clearly another attempt by Hiruko messing with him..And yet Hiruko’s surprisingly ragged breath and slight flush told a different story. Takumi gulped. He knew he had to make a choice here, but what…?

 

KISS HIRUKO?

YES                                                                                               NO

 

WHY STOP AT KISSING?

 

Something was different. Very different. Takumi could feel his blood pumping in his ears at the same level as when he’d use the infuser, and yet, it didn’t feel like that urge to fight, but rather…something else. In fact, the Hemoanima was flowing to a particular location, which one could call a weapon of sorts, but not Takumi. 

 

‘’W-what’s…what is this feeling…’’

 

‘’Takumi…’’

 

Hiruko’s voice pierced into his brain like a newtype flash. It was the complete opposite of what Takumi had come to expect from her, honeyed and sickly sweet, and yet almost yearning. Takumi’s eyes snapped to Hiruko, and suddenly, her simply messing with him seemed a little bit less likely as he stared befuddled at the first pair of real-life breasts he’d ever seen. Where Takumi had dug his nails into his leg to try and get his little infuser under control, Hiruko seemed to have used her nails to unbutton her blouse. Takumi had already found Hiruko beautiful, lit up by the light of the artificial satellite and the eternal flames, a sight to behold. Still, nothing could prepare him for how much seeing her open blouse and black lace-clad breasts could improve the image tenfold. It wasn’t the first time Takumi had seen this sight, in theory. In the first timeline, he’d seen her in a swimsuit- a black swimsuit at that- so how come this sight felt so different? Could it be the inclusion of clothes, adding more mystery? Could it be the material itself causing a different vibe? Takumi wondered if Gako perhaps knew-

 

‘’Takumi.’’

 

Hiruko’s voice was back to the Hiruko he knew, and dragged his eyes up from her boobs to her stern, unamused gaze, and yet the flush was still prevalent. 

 

 ‘’I won’t…ask you again.’’

 

Takumi shoved the mental image of Gako off the roof as his body moved without him telling it to, grabbing Hiruko by her shoulders and pulling her into a long, deep kiss. The smell of lavender filled his lungs as the taste of her lips consumed him, all five senses utterly enthralled by the girl who until this point seemed as steadfast and unconquerable as one of the commanders. He pulled away from her mouth as the two of them sat gasping for air, a string of saliva connecting them as they rested their foreheads against each other, waiting for their lungs to refill.

 

‘’Takumi…’’

 

Hearing the icy-cold Hiruko moan would have been more than enough to short-circuit his brain, but the fact that it was his name almost caused him to lose his balance, and that was not the type of brain either Hiruko or Takumi wanted.

 

‘’Touch me…Takumi…’’

 

Hiruko brought his hand to her chest forcefully, disallowing him the hesitation she had rightfully assumed he might have as she slipped it into her bra. Takumi’s blood roared as the soft sensation enveloped him, his fingers teasing the one hard outlier among the softness causing Hiruko to let out a ragged gasp, Takumi feeling each rise and fall caused by his actions in the palm of his hand as he began to nibble her neck, a primal part of him wanting nothing more than to mark her and claim this proud lioness as his own.

 

 Was he always this type of person? Someone who could go this far with ease? If he was able to make Hiruko act this girly just from his touch, all that time beating around the bush with Nozomi, if he was a little more aggressive, could he have-

 

Hiruko had stopped moaning. 

 

If there was one thing you don’t do when making out with a girl on a rooftop, it’s let your mind wander about another girl.

 

Takumi looked up from nibbling on Hiruko’s slender neck to be met with a gaze that felt like his Hemoanima was getting drained. 

 

‘’Who are you thinking about to make you so distracted, Takumi?’’

 

The chill down his spine was the same one he felt when fighting V’ehxness. Any amorous feelings Hiruko had been feeling had been quashed thoroughly by Takumi’s guilty expression, the grip on his hand that was still held against her breast becoming painfully tight, the black lace bra becoming a prison cell for the guilty. 

 

‘’U-uh, N-no! I-Uh, I wasn’t-’’

 

‘’Oh? Such Hesitation and stuttering.’’ 

 

Hiruko raised her eyebrow, her eyes growing even colder. ‘’So you really were thinking about another girl whilst happily playing with my nipple like a dog in heat with a toy.’’

 

‘’I-I didn’t mean to-’’

 

‘’Boys like you deserve to die.’’

 

If this were back at the complex, Takumi would have almost certainly expected a slap across the face for his unforgivable transgression, or worse, for her steel-tipped boots to make contact with a place he never wanted them to make contact with. 

 

But this wasn’t the complex. This was the Last Defence Academy. And so whilst anywhere else it would be seen as an understandable but far too severe response, as Takumi felt himself falling from the roof, Hiruko’s smug, satisfied look getting smaller and smaller as he fell, all he could think before he hit the ground and released the fluid he actually wanted to keep in his body was a single, straightforward thing. 



Yeah, that’s fair.