Chapter 158: Wholehearted Devotion (Serina / Mouth)

My heart was pounding against my ribs. It wasn't just because I had pulled off that massive, physically enhanced jump moments earlier.

The real culprit was the girl clinging to me right now—Yumekai Serina.

It was true she had been worried about balancing the scales between us. I knew she hated feeling indebted, and I had even spent time trying to figure out ways to get her to accept things from me without overthinking it.

The tablet she’d been using lately was one of those things. But I never expected this.

I never imagined she would offer herself to me just to pay me back. Repaying a debt with her body felt straight out of some dirty book, but knowing Serina, that couldn’t be what she meant.

Calm down, I told myself. Taking a deep breath, I gently took her by the shoulders.

"Listen, Serina. If you're doing this out of some sense of obligation to return a favor, you really don't have to—"

At my words, she pouted and glared up at me through her lashes.

"…Are you stupid? It's not just about you saving me. You're a softie who genuinely cares about someone like me, and you're always the first to step up when it matters most. It's because you're you that…"

She trailed off, swallowing her words for a second. Then, as if steeling her resolve, she closed her eyes, snapped them open with fierce determination, and stared straight into mine.

"—I-I fell for you! Don't you get it yet?!"

Serina’s entire face was flushed crimson, her eyes brimming with tears.

Apparently, I had asked an incredibly boorish question. I cursed my own density—and my habit of selling myself short.

"I'm sorry, Serina."

"…Serina is fine."

"Got it, Serina."

"And you don't need to apologize. More importantly… w-what's your answer?"

Serina closed her eyes.

I was worried about our companions, but they were definitely safe. Besides, there was no way I could leave Serina hanging like this.

She had just confessed to me; I had to show her how I felt. When a girl as attractive as Serina throws herself at you, there's only one real response.

"Yeah. I understand, Serina. Um… looking forward to being with you."

I leaned down and pressed my lips to hers. Her lips were a little cool, yet shockingly soft and moist.

For a few seconds, our lips simply remained overlapping in a gentle kiss before I softly pulled away.

When Serina opened her eyes, her gaze was completely melted with affection. If this were a manga, she’d practically have hearts floating in her pupils.

"Kuno… no, Sōsuke."

Serina wrapped her arms around my back, pulling me into a tight embrace. Along with a pleasant rush of stimulation, her breasts flattened and molded flush against my chest. I gently wrapped my arms around her in return.

Even now, the pack of Afancs moving outside the barrier to attack us was pushed entirely out of my mind.

Mnh, chu… nn… ham… nnn…

Serina kissed my lips repeatedly, as if drinking them in, occasionally nipping them gently. Just when I thought she was done, her right hand softly slid down toward my crotch while her lips trailed path down my cheek, jawline, throat, and neck.

Then, she gave a soft lick.

"Se-Serina…?"

She dragged her tongue up my neck, then flashed a mischievous smirk.

"Hehe, salty."

Her face looked so incredibly lovely right then that my heart skipped a beat.

"Well, I guess that makes sense. You worked so hard to save me, after all. I have to reward you."

Serina dropped to her knees right there, unbuckling my belt and sliding my pants down. My rod had already entered full combat status long ago.

When Serina saw it pointing straight toward the sky, her eyes widened. Her throat hitched as she swallowed hard.

"Whoa… I-I heard rumors, but seeing it is something else."

I wasn't sure how much detail the girls shared during their private meetings, but it seemed my lower half had been a topic of conversation well before we became a couple. I could easily guess Chiyu was the one behind it.

"…Okay, I-I'm going to do it now."

Serina gently gripped my shaft with her right hand and brought her lips to the tip. Chu, chu, she kissed it tenderly, pulling back with lingering reluctance over and over again. She continued the act as if marking the entire thing as hers. It felt less like teasing and more like a pure expression of affection, causing my hips to twitch involuntarily.

"Nnh, chu… Is it still getting bigger? …You actually put this inside Iyama and the others? The visuals alone look like a crime."

It was true that Chiyu was petite, so it must be a struggle for her, but Chiyu was also the main reason it had grown to this size in the first place. Not that I was about to say that aloud—honestly, I didn't have the mental capacity to speak anyway.

"Serina, standard's a bit…"

While I loved the tender kisses, the prolonged wait was starting to drive me crazy.

"Ah, right. Sorry. Okay, here goes…"

Serina parted her lips and took the tip right into her mouth. The sudden, warm sensation wrung a groan from my throat.

"Mnh… nnh… jyu… jyuru… nku, nku… oh…"

Though she seemed hesitant at first, Serina quickly began to take more of the shaft into her mouth. The warmth spread rapidly, filling my head with a profound sense of euphoria. The sweet numbness felt like it was melting my very thoughts.

"Hoo, hoo, nnn."

Serina paused for a moment. Thanks to my daily routine of Basic Heal and Energy Up, my asset had naturally grown significantly larger over time.

She was trying to take it deep, but taking the entire length into her mouth was physically impossible. Yet, Serina pushed her head further down anyway.

"Se-Serina…?"

Then, the tip of my rod hit a barrier—and slid past it.

"Nnn… fh, fh… nggh…!!"

A sudden, intense squeezing sensation gripped me, making my hips shudder. A second later, I realized she had taken me all the way down her throat.

Her face looked strained, and I wanted to tell her not to push herself, but then she looked up at me, smiling with just her eyes. On top ❀ Nоvеlігht ❀ (Don’t copy, read here) of that, she locked her arms around my waist, as if declaring she wouldn't let go.

Since she was going this far, there was no way I could pull away.

I could do nothing but tremble as waves of pleasure washed over me. Serina’s head bobbed back and forth, repeatedly taking me all the way to the hilt.

The sensation was entirely different from any oral encounter I had experienced before. It wasn’t a matter of better or worse; it felt like a completely different act altogether.

Serina kept bobbing her head diligently, peering up at me with that adoring, upturned gaze. Because I knew how she used to be, the sheer contrast of her wholehearted devotion drove my arousal to unprecedented heights.

"Serina…!"

"Mnn… ngh, let it go… Sōsuke… all of it…!"

Serina squeezed my waist even tighter. With a sensation akin to being struck by lightning, the uncontrollable urge erupted from my hips.

"Mnnh…?! Nnh… nku, nku…"

The liquid shot out from my throbbing shaft, flowing straight into the depths of Serina's throat without a single drop touching the outside world.

Lost in an overwhelming tide of pleasure, I could do nothing but float in a daze of pure ecstasy. I had no idea how much I poured into her.

Serina slowly slid her mouth off my shaft, coughing a few times before silently licking down the glistening, wet length. She did it naturally, as if it were the most obvious thing in the world. Once she had swallowed every last drop of the white fluid, she flashed an alluring smile.

"To be honest, I never thought I'd ever do something like this…"

She seemed fully aware of how much she had changed from her old self. And no wonder—she was practically a different person now.

"This is all your fault, you know."

She gently caressed my shaft, which still retained its hardness.

"I never thought there’d be someone who would risk their life to save me, completely ignoring whether they stood to gain anything. That means I’m actually worth that much to you, right, Sōsuke?"

"I don't know about 'worth,' but… I’d do the exact same thing next time."

Serina shuddered as if a jolt of electricity had run through her.

"~~~~! You'd probably do the exact same thing if any of the other girls were in a pinch, wouldn't you? But I guess that’s exactly why everyone falls for you. Ah out of all things, you completely reeled me in."

Giggling, she rained another shower of kisses down on my shaft.

"Se-Serina…"

"Yeah? Want to keep going…?"

Serina had eyes only for me. But I could see past her. Now that the monsters were wiped out, our companions had emerged from the barrier and were running around, searching the area…

"Everyone's looking for us."

"…………Ah, they're fast. Has that much time really passed?"

Serina pouted, looking disappointed as she helped me pull my pants back up.

"They probably know we're safe, but they must be incredibly worried."

"I know. Even I'm not twisted enough to keep going here. Though honestly, I really don't want to stop."

"Same here, but…"

Satisfied with my answer, Serina let out a soft laugh.

"Oh well, whatever. We can do this as many times as we want from now on anyway."

The unapproachable aura she used to carry had completely vanished into thin air. Instead, she offered a bashful, blushing smile.

"Getting liked by someone like me is just your luck running out. I’m going to spend the rest of my life paying you back, so you better be ready for it."