Going back a little in time, around when Renya was reuniting with Riselia, changes were also occurring in Kuoh Town, Japan.
On the day of his first date with his first girlfriend, Amano Yuma, Hyoudou Issei was stabbed in the stomach by a spear of light in a park at dusk.
Yuma, who was actually a Fallen Angel, had judged the Sacred Gear dwelling within Issei to be dangerous and eliminated him.
As Yuma flew away with a cold sneer, flapping her black wings, a beautiful red-haired girl—Rias Gremory—appeared from a magic circle as if taking her place.
"So you're the one who called me... You look like you're dying. The wound... Oh my, isn't this interesting. So you're the one... How truly interesting."
Rias chuckled with interest as she examined the fallen Issei's wound.
"If you're going to die anyway, I'll take you in. Your life—live it for me."
A crimson light that seemed to paint over the sunset illuminated the park.
…
After defeating the Magical Beast King Behemoth and saving the dying Riselia by reincarnating her, Renya returned with her to his home in Japan.
The recovered Behemoth corpse was analyzed, dismantled, and sent to his territory in the Netherworld with instructions to use or sell the materials by category.
Furthermore, Riselia's childhood friend, a girl, also came under Renya's protection alongside Riselia.
That maid would not become a Servant but would enter his harem and become his after finishing her education.
Of course, her consent had been obtained.
Now, having finished all his reports, he was lying on his bed resting.
'This battle left much to be desired.'
Renya reflected on the situation where he had lacked the means to respond.
Of course, he couldn't handle every possible phenomenon, and he wasn't arrogant enough to think he could.
But being completely helpless was a problem.
'I should think about acquiring a means to approach life force.'
It was best to prevent such situations from occurring at all, but the unexpected always lurked.
Countermeasures were necessary.
'Should I supplement with a Servant or a retainer... It would be best if I could learn it myself.'
Eastern arts were hard to find practitioners for, which meant finding someone to learn from was also difficult.
It was a persistent concern for Renya.
'And then... there's this.'
Renya was reading a report about events that had occurred while he was away.
A new member, Hyoudou Issei, had apparently joined the Gremory Servants.
Of course, this wasn't communicated by Rias—he had received a report from Lavinia that, while he was away, Issei had been nearly killed by a female Fallen Angel and was reincarnated by Rias.
'I want to get involved with the Gremory Servants even less now. Lavinia, Shizuna, and Sylpha have no contact points, so as long as I don't approach them, it should be fine, but I need to be careful with the school group.'
Renya had no expectations from the start that Issei wouldn't commit sexual harassment, or that Rias would properly educate him.
He had instructed them to report to him if anything happened, and permitted them to use force depending on the situation.
He was prepared to enter a conflict with the Gremory Servants and the Gremory family if necessary.
'Well, it would be troublesome if that siscon Maou who favors his family got involved.'
Thinking of that strongest Maou, Renya thought he couldn't win yet, but renewed his determination to eventually surpass him in ability as well, while welcoming a visitor to his room.
"So, what did you want today, Riselia?"
Renya asked Riselia, who was sitting on the bed.
Riselia was now wearing a pale purple negligee—comfortable sleepwear—but despite the thin clothing, her cheeks were flushed and she looked nervous.
Renya softened his tone to ease her tension, and Riselia, though nervous, broached her business.
"Um, Ren-kun... I-I want you to hold me too!?"
"Why so suddenly?"
"I-it's not sudden! I-I'm your Servant now too, Ren-kun! I-I've always dreamed of being with you someday! But you might feel indebted to me, so... that's why, even though it's embarrassing, I'm the one to..."
Apparently, Riselia was dissatisfied that she was being treated so carefully that he wouldn't sleep with her.
Renya had been worried that he had made her his Servant in a situation where there was almost no other choice, even with her consent, so he had been a bit more hesitant about that kind of distance compared to other Servants. But Riselia apparently didn't feel that way.
"I see. That was thoughtless of me."
Saying this, Renya sat down on the bed beside Riselia.
"Ah, Ren-kun... mm, Slurp."
Riselia, with his hand on her shoulder, faced him, closed her eyes as if entrusting herself to Renya, and they shared a soft kiss.
At first, it was a touching kiss. They pressed their lips together as if conveying their warmth and feelings, and as their emotions heightened, it became a deep kiss.
"Mmm, smack, licking... Ren-kun, I love you, I love you, Ren-kun... smack, licking... mmm..."
Their tongues intertwined; they mixed and swallowed saliva, licked each other's palates and inner cheeks, exchanging deep kisses.
Their breaths and obscene wet sounds echoed through the room.
Eventually, they parted their lips and gazed at each other.
Then, when Renya gently pushed her down onto the bed with a light force, Riselia didn't resist and let herself go with the flow.
"Riselia. I love you. I'm sorry for making you feel lonely. I'm going to hold you now."
"Call me Selia..."
"Ah, Selia."
"I'm so happy... Ren-kun."
Her cheek touched; Riselia looked up at Renya happily and replied.
They shared one more touching kiss.
Renya removed Riselia's negligee.
Perhaps she had deliberately not worn underwear—her breasts, which had been full two years ago but had grown even more, bounced and swayed heavily.
"You're beautiful."
"I-it's embarrassing when you stare like that... b-but being praised by you, Ren-kun, makes me happy."
Renya returned a smile to Riselia, who smiled with flushed cheeks, and touched her ample breasts with both hands.
Perhaps because she was trained, her breasts—rivaling even huge breasts in size, filled with softness and even more elasticity, with a springy, mochi-like texture—were exceptionally pleasant to touch.
"Ann, mm, haa, mmm, aaah, Ren-kun's hands are rough and big...! Nn-ah, haan! And warm, it feels good."
Riselia's eyes moistened with pleasure at the sensation of having her breasts touched for the first time.
Renya kneaded Riselia's elastic breasts while catching her small, cherry-colored nipples between his index finger and thumb, pinching them.
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