However, Alistair intentionally refused to plunge in, instead letting the Silver Dragon Halberd just graze the entrance of the cave, rubbing it back and forth twice. Then, aiming for the center, he slowly pushed forward.
"Oh, did Chiaki-nii-chan fantasize about her little brother's Silver Dragon Halberd being aroused? This cave already has plenty of moisture, letting me enter so smoothly~"
Alistair repeatedly called her Nii-chan (Big Brother, typically used for older male siblings). With every utterance, the inner walls of the cave forcefully contracted.
"No, there was no such thing~ And you really let that come inside? You Baka (idiot)!" Chiaki retorted. At this moment, she seemed to have forgotten that she could easily overpower Alistair, her little brother, and was only capable of a weak rebuttal.
"Hmph~ I love that defiant look on you, Chi-a-ki O-ne-chan~" Alistair called Chiaki using a sarcastic, sing-song voice, then abruptly thrust his hips, giving her a small Beast Shock.
"Ah~!" Chiaki was struck by a double impact from Alistair's tone and the thrilling sensation from below, displaying a very peculiar expression that brought Alistair immense pleasure.
"As expected of the group's leader, Chiaki One-chan. Even the tightness of your entrance is completely superior to those two lewd sluts. The fit is extremely snug~"
Alistair, who was repeatedly thrusting the Silver Dragon Halberd, wore a triumphant smile, enjoying Chiaki's determined expression as she tried her best to maintain her composure and not roll her eyes or stick out her tongue.
"As a little brother, you're too arrogant. Don't get ahead of yourself just because you've fucked a few girls. Compared to the number of people I've been with... Agh!" Chiaki looked sideways at Alistair, still speaking defiant words in short, breathless bursts, only to be cut off by a deep, powerful thrust from Alistair that stimulated a certain soft core.
Although Alistair knew Chiaki was exaggerating—judging by the tightness, she couldn't have done it many times, as she was even tighter than Yukiko, who had only recently gotten a boyfriend, and might have only used toys—Alistair leaned his head close to Chiaki's ear. He stuck out his tongue and licked her ear, causing Chiaki to tremble violently. Then, he gently bit the area near her earlobe and whispered slowly:
"Sure enough, Chiaki One-chan is a shameless slut too~ Well, I won't hold back then. Your little brother is about to give it his all~"
He then moved his body more forcefully, making sure the tip of the Silver Dragon Halberd stimulated that soft core with every thrust.
'In such a deep place, every churn sends a jolt of electricity to my brain. My mind is turning completely blank... I've never experienced this feeling before...' Thoughts like this kept popping up in Chiaki's mind as she felt the continuous stimulation of the Silver Dragon Halberd.
"Hey, Chiaki One-chan, does it feel good? Among everyone you know, my weapon is the most powerful, right?"
Alistair spoke while breathing heavily into Chiaki's ear, making it nearly impossible for Chiaki to think.
'Absolutely, I must not let him get any more arrogant...' Chiaki stubbornly insisted in her mind.
"It's just... big... it's not... a big... deal..." Although she was breathing too hard to complete a sentence, Chiaki stubbornly resisted. "Little Alistair, you're the one who needs to relax quickly. Open the switch and release your passion~"
"Ya-ho! Since you asked, let's end the first round. Take all of it!"
Alistair's movements rapidly accelerated. Just as Alistair shouted the final phrase, the boundless bullets, wrapped in a feeling of complete happiness, erupted like a volcanic explosion, spurting out with scorching heat.
"Hah~ Ugh—!" Chiaki felt her small room being violently flushed by the massive amount of hot happiness.
'I was really creampied by my little brother~ This is the first time I've flew from an orgasm~' With this thought, Chiaki soared and glided through the endless rush, feeling like she was ascending to heaven. She used her last shred of defiant will to bite her lip hard and stop herself from screaming out loud.
'At least I managed to hide it,' Chiaki thought delusionally as she collapsed onto the floor, already too weak to support herself once the Silver Dragon Halberd was withdrawn.
"Ah!" While Chiaki's mind was still in the afterglow of climax, Alistair lifted her legs again and put the still rigid and ferocious beast back into the cave.
"Little Alistair! Stop it!" Chiaki pleaded in a tone of surrender, having been stimulated again.
Alistair knew very well that Chiaki had already flown—the discharge was like a shower—and she only thought she had hidden it well. But since she stubbornly refused to admit it, he would keep going until she couldn't deny it anymore. He'd see whether her mouth softened first or his weapon did.
"I won't stop until Chiaki One-chan truly flies." Alistair deliberately taunted.
'Yabai (Oh no), I can't muster any strength... I can't resist at all... If he keeps churning like this...'
"I'm flying... Every time he stabs me, I feel like I'm soaring into the sky." Chiaki unconsciously muttered, completely exposing her condition.
"You're flying? Is Chiaki One-chan really flying?" Alistair deliberately asked loudly when he heard Chiaki's mumbling.
"I'm flying... Just kidding~" Chiaki still insisted on her defiance, denying Alistair's question.
"Oh? Then how about this?" Alistair freed his hands, which had been grabbing Chiaki's waist, and reached forward. The pink areolas of Chiaki's two soft mounds immediately came under Alistair's control, to be manipulated at will. Alistair occasionally pinched the two tempting azuki beans between his index finger and thumb, eliciting a continuous string of moans from Chiaki, who radiated a pink aura all over.
"One more time! Watch me forcefully inject positive energy to purify your thoughts!"
As his movements rapidly sped up, Chiaki's expression began to completely break down. Soon, with a low growl from Alistair, Chiaki felt unprecedented happiness, feeling as though her entire being was being uplifted and purified by the injected positive energy.
"I'm going to heaven, I'm really going to heaven. This weapon... it's too amazing~" Chiaki's expression was completely ruined; her eyes rolled back, her tongue lolled out in pleasure, and she kept muttering to herself.
Alistair released Chiaki, letting her fall to the floor. He pulled the tube used for injecting positive energy out of the cave. A large amount of overflowing positive energy that couldn't be contained also streamed out.
"Heh, now let's see you try to mess with me, mess with me, will you? I'll give you a full load. You won't know what power is until I give you a complete drenching."
Alistair carried the still ahegao-faced Chiaki into the bathroom, washed her and himself, then threw her back onto the bed. He let out a breath, lay down next to Chiaki, closed his eyes, and drifted off to sleep.