-Issei and his Snake Onee-Sama-

[A threat?!]

As far as everyone is aware, there are only three members in the Hyodou Household, comprising of the Patriarch Gorou, a fairly unremarkable Worker in an equally run-of-the-mill Company who worked from morning to dusk in order to provide a comfortable life for his family the best that he could, the Matriarch Miki, a strict yet doting Mother that did everything in her Power to raised her Son into a Healthy and upstanding member of society, and the only child of this Family, being the furthest Person from what his Mother wanted him to be despite her best effort to rehabilitate him, Issei Hyoudou, Perverted Extraordinaire of Kuoh Academy, Former Member of the Human Race, now currently a reincarnated Devil, Pawn in service of Rias of the Gremory Clan, and wielder of the Boosted Gear that housed the spirit of Ddraig Y Goch, the Legendary Welsh Dragon of this Generation.

Or at least, that is how far the knowledge of anyone familiar with the Brown-haired teenager in question extends. Because of that, it came as a surprise to all when they learned that Issei's Elder Sister from Kyoto would be visiting him and his family in the coming days, practically announcing that fact to basically those who are willing to lend him their ears with the biggest, brightest smile on his face, the like of which his classmate only ever seen him having when he peeks into the girl's locker room, making some of his regular victim accusing him for having a perverted intent with his so-called sister. But to the growing astonishment of his peer, he actually gets defensive over such a proclamation, going so far as to bear his fangs and release the Pressure of the Dragon Emperor on them, threatening to crush them with it for merely entertaining the idea that he would do something that makes his Onee-sama as he referred her as uncomfortable, even warning those that even harbor any lecherous idea about her that they will be answering to his fist, his dragon-plated fist to be exact.

Such a statement rendered the populace of the classroom speechless, especially when he declared it in front of his two Best Friends, showing that he would not offer even them any leniency should they ignore the warning that he had generously given them, before returning to his seat, where his mood shifted back to an upbeat one as he stared out at the window, looking forward to the meeting between him and his Elder Sister, all but trembling with anticipation, while the rest of the class just looked on at him in disbelief, unable to process what has just happened, or the fact that Issei of all people would hold any women which such level of respect as to addressed her with such earnest admiration, only recover when the teacher entered the room and instructed them to resume the lecture, with the rest of the day passed them by like it always had, though no one was able to focus on the lesson in the slightest, for the image of the resident Pervert's genuine rage forever burned into their mind.

By the time the bell chimed, the brown-haired teenager wasted no time, immediately packed his belongings up, and headed straight for the exit, completely heedless to the yell of protest from his teacher. Right now, nothing matters to him, for he has places to be, namely his house, where he received a message from his Parents through the communication line of his phone that their upcoming guest will soon arrive in about an hour, prompting him to rushed back home as soon as possible, not willing to pass up the opportunity to be there to welcome his sister. As such, with a heavy heart, Issei has to decline the chance to walk back home with his roommate as well as lovers of Asia and Rias, wanting to make his way back home as soon as possible, much to the dismay of the two girls, not knowing what has caused Issei to act like this, until they were informed by Kiba, who was there when Issei informed everyone of his elder sister, about the context of the situation.

Needless to say, the two did not take it well upon learning about it. For Asia, hearing that Issei prioritized meeting his sister over her brought about an unpleasant feeling she could not adequately describe in words, with her heart aching at the thought that her Love Interest would favor his Elder Sister over her, to the point that he would deviate from the usual routine of accompanying her back to their shared home just to be there to greet this enigmatic woman. On Rias' part, she was acutely aware of what she was feeling right now, a deep-seated sense of envy toward this Onee-Sama, not that he would ever admit it, of course. Even still, the Gremory's Scion was not going to lose to this new rival for Issei's affection. She needed to see for herself just what kind of person her lover's elder sister was. After all, there is nothing wrong with studying the competition! So with a plan in mind, the Former Nun and the Red-haired Devil decided to set aside their differences for the moment to assess this new threat to Issei's heart.

Following the Red Dragon Emperor, the two made it back to the Hyoudou household, where a burst of cheerful, revelrous laughter could be heard all the way at the entrance, belonging to a voice they did not recognize. That has to be Issei's Elder Sister. Sharing a nod between them, Asia and Rias, silent as a mouse in the dead of night, sneaked up to the source of the commotion in the kitchen, where they saw the two parents and their Son sharing their mirth with a Woman, age seemed to range from late twenties to early thirties, clad in a rather bold attire of fishnet stockings, a crop top that exposed her navel with a leather jacket worn over it, which give her the appearance of a College student, a rather beautiful one with her flowing hair of black with a tint of purple gleam to them, complementing her luscious skin tone, well-endowed form, unnaturally gorgeous feature, which is dyed with a bright red shade, likely the byproduct of the Sake she drank from the bottle in her hand, not to mentioned the heavy scent of alcohol clinging on her person.

Yet despite being clearly intoxicated, as soon as the Former Nun and the Gremory's Scion reached the door frame, the Woman snapped her head toward their general direction at near breakneck speed, her dazzling pair of jewels of an eye stared straight into their being, causing them to nearly jumped in surprise, "Ara~? Arararara~? Are these your lovers I've heard about, Issei-chan~?" Came a question from the enigmatic individual, her voice slurred from the influence of the Alcoholic drink, yet even though she looked like she was a cup away from collapsing, there was an appraising gleam in her eyes that a drunken person should not have, clued Rias, who has experiences in reading people, in that whoever this Elder Sister of Issei is, there is more than meets the eyes about her, "Ara, don't look at me with such an eye, you are going to leave a burn marks on me~" Now that she had mentioned it, the redhead was staring at her quite intensely, enough to tear a hole at her, causing her to avert her eyes in embarrassment. Damn it, she let her emotions get the best of her again.

"Onee-Sama, please don't tease her too much." At the shrinking sight of a flustered Rias, Issei could not help but chuckle. While he finds Rias to be incredibly beautiful, there is just something appealing about the normally calm, cool, and collected President of the Occult Research Club acting in such an adorable manner, though that is neither here nor there right now, he supposed, "And yes, they are. Onee-Sama, this is Asia and Rias. Asia, Rias, this here is my Elder Sister, Ibuki. She has been studying abroad in Kyoto, so she is rarely home. Please treat her well." With the introduction process made, the newly-christened Ibuki offered an energetic wave at the two, who could only return with a half-hearted one, unsure of how to feel about this information. Strange, Neither Issei nor his parents have ever mentioned an Ibuki throughout their stay with this family, as a matter of fact, when questioned about it, Issei has said that he was an only child, and even then it took three attempts from Gorou and Miki due to the two failing to give birth the previous two time, yet he is acting like he has an elder sister his whole life. Could this be...A magician planting mental suggestions into these three? No, it couldn't be, Ddraig would have protected Issei from any sort of mental contamination, not to mention Rias could not detect any discrepancies when she performed a scan on the Hyoudous.

But if that is the case, why haven't they heard about Ibuki until now? "Oh right, forgot to mention, Onee-sama isn't actually related to us, she is something of a surrogate sister. We met when Irina moved away and have been with a close friend since." Ohhh...That explained it. Holds on...If they are not related by blood...Does that mean...Issei and her could potentially be a couple?! Now, if they exercise their rational thought process, then Asia and Rias would realize that as someone Issei seems to look up as a sister figure, he would not harbor any romantic feelings toward her, given that Kiba has told them that the Red Dragon Emperor seems to be protective of her when his two perverted friends expressed their interest in meeting his Elder Sister, to which the Young Man did not appreciate the implication behinds their words. Problem is, their fear of their position as Issei's lovers has overwritten whatever reasonings they have, causing them to jump headlong into the worst possible conclusion, leading to them immediately running up to the brown-haired teenager and cling onto him, as if letting him go would result in Ibuki snatching him away from them, "Wha-?! Girls?! What's wrong?!"

"Issei! You already have me, understand?!"

"Yes, Issei-san! No need for more!"

"Ara Ara~! Seems that your girls is a little possessive, Issei-kun~" Never could Ibuki thought that this day would come, where her normally perverted Surrogate Brother would have a Woman in each of his arms. Life is truly full of surprises, "You know Issei, I think we should catch up sometimes. How about we go out tomorrow~?"

"Sure! I'd love to!"

'"Issei?!""

"Fufufu..."

To be Continued...