"I am sorry."
As the silence fell upon them, Nifuji broke it by apologizing since he knew well how hard he was, but he knew well that with how his body was, even if he was quite exhausted from the trip, his cock directly grew larger, swell in an erection, showing its utmost state in front of Chika, who saw an adult cock for the first time.
Yet, the reaction that he expected from Chika was different from what he had imagined.
In his mind, he thought that Chika would scream and even slap him, but unexpectedly, she moved so close as she stared at his raging erection, which made it even harder.
"It's huge..."
Chika murmured with a red face, never expecting that her older brother-like figure, who appeared like an elegant, elite businessman, would possess such a beast within his lower body.
Was he also such a sadist?
In the past, there was a book about a sadistic CEO, who took an interest in a plain woman, as they started their BDSM play, where the woman was being tied in the chains, as her body was tormented in the pleasure that she had never experienced.
Would Nifuji have such an interest?
Chika wasn't sure, but her breathing grew harder, staring at his glans that appeared delicious for some reason, she subconsciously slightly opened her lips, seemingly about to lick and swallow his—
"...can you not be so close like that?"
"Sorry! Sorry!"
Chika quickly apologized as she stepped back, but she slipped and fell into the water.
Splash!
As Chika fell, Nifuji did nothing.
Yup, in the usual scene, the protagonist would help the heroine as he screamed, "Be careful!"
And, by then, as many incidents happened, a love would start to bloom, but Nifuji had too many women, and even if Chika fell, it was fine since they were on the water.
As expected, Chika quickly came out of the water as she complained, "Onii-chan, why didn't you help me?!"
"...if I help you, I can't calm down."
"O-Oh..."
Chika quickly realized what Nifuji meant, as she knew that his cock was just too intimidating, and frankly, his was like those cocks on the hentai manga that made all the women crazy and even threw away their everything for the cock.
Yet, she also bit her lower lip, as her body grew hotter due to the onsen and also the thought that emerged in her mind.
"...did it grow hard due to me?"
"....."
Nifuji was helpless, but he looked away as he gazed at the night landscape of Aizuwakamatsu city. "Um..."
Still, compared to the scenery before him, he couldn't help but recall Chika's naked body that was on his mind, making it harder for him to calm down.
Her body might not be the best, especially when her body wasn't at the best proportion, yet even so, her breasts were of a nice size, her two pink nipples were perky, and her buttocks were just tantalizing.
Somehow, as he saw her round and cute buttocks, he wanted to press his face there, or simply rub his cock violently, but he held back, as his mind felt dizzy from the lust that grew within him and the hot temperature of the onsen that melted his rationality.
'No, I have to leave.'
If this continued, he was afraid that he might seduce her, and their relationship might develop into something that he didn't really want to, especially when she had just become an adult, her potentials were unlimited, and she could find someone, who could truly give their hearts to her instead of a bastard like him, but a feeling was unpredictable since as he thought of her would hate him due of his reaction, Chika embraced him from behind, letting her entire body and breasts to lean and press against his back, making him able to feel the smoothness of her skin and the lewd sensation that came from their connection.
Nifuji felt like an electricity jolted his entire body, causing him to be stiff, but Chika's move hadn't ended since, as she embraced him, she gave him a naughty whisper, "Onii-chan is ecchi~!"
"....." Nifuji.
"Don't tease an adult!"
Nifuji lightly tapped Chika's nose, feeling helpless despite how hard his cock was.
Yes, their situation might be so perverse, but even so, he had a lot of experience, so even if they were naked, and his cock pressed against her smooth belly, he could still chide her.
"Even if you tried to scold him, it wouldn't be so convincing when your cock is so hard like this!"
With her pout, she made her complaint, but then, she went all in silence, as her gaze met his.
Nifuji didn't say anything, only stared at her eyes, yet it made her heart beat so fast, feeling shy, embarrassed, and all other emotions that she had never felt before, and—
"Is it okay?"
Chika felt her body was weak, and she fully leaned on him, as if she wanted to become one with him, but even so, when she heard that question, she nodded shyly as she closed her eyes, waiting for her lips to be taken.
Soft and warm.
The moment their lips were connected, it was like everything vanished, and the sensations that they felt were the only thing that they focused on, and subconsciously, they also started to rub their bodies, feeling like they were floating on a cloud, as they sought more pleasure.
His tongue, which was all obedient, also grew naughty, prying her lips open, as she clung to him tightly, enjoying the new sensation that her body learned.
Like, how a young chick learned how to fly naturally, after her first kiss was taken, her kissing also grew lewder, as her tongue entangled against him—
"Hnh~!"
Her body suddenly shivered and stiffened before she plopped onto his chest, feeling weak yet satisfied.
"..."
Yet, Nifuji was in silence, looking at Chika, who passed out on his chest, then looked at his hard cock, as he let out a helpless sigh while he caressed her hair, wondering what he should do with this pent-up desire that was already on the verge of eruption.
"...let's go back."
Yup, there was nothing he could do. Chika was just too weak, and she was also too exhausted from the trip, so it was a normal reaction, yet once again, what should he do?!