After Reaching the Happy Ending, I Was Locked up by the Extremely Possessive Heroines I Had Conquered

Chapter 18: My Little Sister Invaded My Bed

Taking responsibility turned out to be more difficult than I had thought.

There were patterns where great people took responsibility, and patterns where the parties involved did. In some cases, unrelated people might even have the blame pinned on them.

Of course, no one wanted to take responsibility.

—You’ll take responsibility.

That meant there was no rule saying I necessarily had to take responsibility; in fact, the responsibility might lie with the three families…

As I thought that, the sensation of her lips suddenly came back to me.

I just couldn’t forget that moment, and I ended up touching my lips without thinking.

…No, it was definitely my fault after all.

Well, I was aware of that, of course. The responsibility lay with me.

But the responsibility Satori meant didn’t seem like something light; it felt more like lifetime employment. She probably wouldn’t allow something like switching jobs.

I wondered if a resignation agency could help?

Well, that was probably impossible.

For starters, it was unclear if an organization like a resignation agency even existed in this world, but either way, in a black company where the boss monitored you twenty-four hours a day, the word “resignation” was taboo.

Once you got a job, switching to another company would likely never happen again.

As I tossed and turned, thinking in circles about responsibility, I suddenly woke up.

With sleepy eyes, I opened my heavy eyelids, and a shocking sight spread out before me.

“Whoa⁉︎”

Mahiru was in my bed, of all things.

I let out a voice without thinking and bolted upright. Mahiru was next to me, breathing softly in her sleep.

Her soft cheek sank into the pillow, and her peaceful sleeping face was illuminated by the morning light. Her long eyelashes trembled slightly, and adorable murmurs leaked from her lips.

How on earth had she ended up sleeping in my bed?

It was mysterious.

And there was one more even more mysterious thing: even though three days had already passed since that typhoon, she sneaked under the covers like this every day, which was truly baffling.

What was even more inexplicable was that, if my memory was correct, we had gone to sleep in separate rooms last night. We had said good night and parted ways.

Yet every time I woke up, my little sister was always in the bed with me.

And she was holding me quite tightly, so it came with the option that I couldn’t easily break free.

At this point, it was nothing short of a mystery.

“Ugh…”

So there I was, first thing in the morning, being squeezed by my little sister.

I couldn’t move at all, which meant I had no dignity left as a brother.

Well, if we were going there, I had lost any dignity the moment she put a diaper on me…

“Sigh…”

I wondered where I had made the wrong choice. In the original story, no matter which route I chose, she never turned into the type of little sister who would put a diaper on me…

The world was full of truly mysterious things.

“Mahiru, it’s morning! Wake up!”

Having realized it would be difficult to escape on my own, I tried to wake Mahiru.

But she didn’t twitch in response. She kept breathing peacefully in her sleep while firmly holding onto my body.

Come to think of it, even when I escaped from the cabin, Mahiru hadn’t shown any sign of waking up. Her sleep was too deep for this level of calling to work. She was like a bear in hibernation.

“Guhe…”

The squeeze suddenly tightened, and it became hard to breathe. At this rate, I would suffocate from the pressure.

If calling didn’t work, then shaking her was my last resort.

“Mahiru! If you don’t wake up, something bad will happen!”

With that thought, I grabbed Mahiru’s shoulders and shook her vigorously.

But this seemed to have the opposite effect; the shaking only made her squeeze tighter in proportion.

…This wasn’t good. At this rate, my ribs would break before Mahiru woke up.

The one in trouble would be me, not Mahiru.

“Sigh…”

Feeling the danger to my body, I gave up and decided to go back to sleep. I believed she would wake up by the next time I opened my eyes.

Then, right at the moment I had resigned myself, there was a small rustling sound from the sheets.

“Mm… mmn… munyu… n.”

Mahiru let out a small groan and slowly rubbed her eyes as she sat up.

Her posture was so defenseless that I ended up peeking at her with half-lidded eyes.

Then, thinking I was still asleep, Mahiru poked my cheek with a poke-poke while grinning.

“Hehe, a sleeping big brother looks just like a child.”

She said that cheerfully and buried her face in my chest. Then she took a big, deep breath.

“…Ugh.”

I desperately endured the ticklish sensation that assaulted me.

Mahiru’s face was buried in my chest, then she gradually moved closer to my neck. At the moment her warm breath puffed against my nape,

“…Big brother.”

“…”

“You’re awake, aren’t you?”

“Eek…”

She shot me a sharp glare, and under that pressure, I opened my eyes.

Mahiru’s face was right in front of me, so I instinctively turned away, but she crawled closer, bringing her face nearer.

It seemed she wasn’t going to let me escape first thing in the morning.

I opened my mouth, sweating coldly all over my body.

“How did you know?”

“I can tell by listening to your heartbeat.”

“…I-I see.”

…She could tell by listening to my heartbeat?

For some reason, just hearing that made my heart rate spike wildly.

“Why were you pretending to sleep? Is it because you have something to feel guilty about?”

“I was just thinking of going back to sleep.”

Mahiru wouldn’t stop interrogating me right from the moment she woke up.

Over the past few days, her trust in me had apparently hit rock bottom, and now she questioned the intent behind every action I took. There were limits to paranoia.

I didn’t have a single guilty thing…

“Besides, I haven’t forgiven you yet, big brother. You snuck out of the cabin on your own and then proposed to Satori…”

“I didn’t.”

“And over the island broadcast, no less? Proposing so everyone on the island could hear—that’s unacceptable.”

“I didn’t.”

“That’s way too inappropriate, no matter how you look at it!”

Overwhelmed by Mahiru’s momentum, I nearly clutched my head.

But she wouldn’t even allow that minor action; still straddling me, she pinned down both my shoulders.

There were no handcuffs this time, but the situation hadn’t changed much from before.

Surrounded by Mahiru’s breath, my pounding heart, and her sweet scent, I felt like my head would go crazy.

“I admit using the island broadcast was wrong. But I had no choice. It was the only thing I could think of—”

“—Even if you had gotten permission from your little sister first, I still couldn’t forgive a unilateral proposal like that.”