Chapter Text
Wait, that voice… this clinginess… and while I was processing the situation, I could see my girlfriend raising her head enough to let me see her expression, and a look in her eyes full of innocence and a desired to be spoiled… IT WAS AJISAI-CHAN!!! WHY!? I knew I had asked multiple times to take care of her again, but with everything that had happened over the last year, there was zero chance. But why would she choose to behave like that when it was a state secret!? She was so embarrassed when Mai saw her…
WAIT!? Hold on, everyone, she calls Mai onee-chan, too? That means that they already did this at least once… no?... NO!?
“Mai onee-chan?...” Satsuki shocked face was poetic to describe the confusion of the situation while looking at us with surprise.
“Rena-chi, you pervert, what did you teach A-chan?” Her concern and accusatory glare were directed at me almost instantly.
“You two would mind explaining what is going on with Ajisai!?
While those two accusations shiver my spine due to fear, the cutest angel ever was hugging me like a little Koala into a tree, before stop hiding in me and crossing her fingers like an X to Satsuki while making a cute wrong sound.
“Wait, wait, I didn´t teach her this, I swear!!! I´m as confused as you two are. Why now? I have a lot of questions. This hasn´t happened since summer vacations.”
“Indeed, I´m as surprised as Renako about our “little” surprised, but it is quite adorable.” A giggle of Mai resounded into the living room, looking with adoration at a childish Ajisai. –“ I would explain something, but first of all, there is a way that she asked you to call her the last time, darling?”
DON´T BE SO MISTEROUS, MAI? IF YOU KNOW WHAT IS GOING ON, EXPLAIN ME INSTEAD OF FLIRTING LIKE WE WERE MARRIED ALREADY! For the sake of god, how I love her so much and want to marry her!?... Well, I know that answer, being honest, and don´t only want to marry her too, with Ajisai, Satsuki and Kaho, but I´m not gonna say it and even less with this inconvenient between our hands.
“Well, she prefers to call me Ajisai-chan, the last time. Why that would be relevant!? Come on, explain everything.”
“That explains her reaction well. I called her Ajisai; it was quite adorable, but if Renako doesn´t know what is going on, explain it to Mai.” Satsuki's eyes were beaming with a softer gaze than the one she usual has for Ajisai,
“Wow, even Saa-chan's curiosity was defeated by A-chan's cuteness,” Kaho muttered before starting to pet Ajisai-chan back.
“Satsuki onee-chan, Kaho onee-chan wanna a candy.” Almost immediately, taking advantage of the attention given to her, Ajisai opened her mouth like a little kid after demanding to be fed, something that Satsuki didn´t waste time giving her.
“So after founding Ajisai and Renako like this, when I visit them in the thermal water, I thought it was a weird kink of any of them, but when we three officially started to dated, I began to do some research about it and even ask a friend that it´s experienced in different fetish to see what could for the day we finally do it. “She explains calmly while blocking Ajisai-chan's ears during the conversation like she isn´t allowed to hear us, but due to the turn of the conversation, probably is the best option with how horny Mai could get sometimes.
“So after explaining to me some terms and giving me different handful and useful material for the future of us five, I ended up finding two terms that fit our dear Ajisai-chan, one would be Age play tha could lead into something sexual, something that I don´t think it would be the case, but you are the one who lived by first hand the last time Renako, what do you think?”
“Yeah, the innocence in her eyes and silliness that reached that day didn´t look like something that turned her on. The second term would be?” The memories of Ajisai-chan are still fresh in my mind; I even remember how I prefer to avoid any inappropriate topics with her. Considering Mai has some mysterious materials, I probably should worry about it. It's impossible that she would accept Fuwa-senpai's collection and lend it… right?... right? (*It was Fuwa Aya collection)
“The second term would be age regression. Some people develop a mental regression, like a copying mechanism, to deal with some trauma, stress, or to revive a lost childhood. Each person could experience it different, but it usually appears in a secure space. It is not harmful, and it looks like this one is the one that applies to Ajisai-chan. When she came out of her headspace, we can double-check which one and explain what happened to her.” Mai explains so softly while stopping to cover Ajisai ears and prefers to hug her, creating a small giggle from her smile.
“Hopefully you could let us know before Mai, but I got, this time it is different from the last one with Renako.” A deep sight escape from Satsuki while she was organizing the information in her head. – “I would investigate too, if you could lend me that material related to it would make it easier.”
“So technically A-chan mental is a kid right now just because it was secure with us!?” Kaho looked so heart touched by it, pitching Ajisai cheeks playfulness and softly.
“So that means Kaho is always in that state since she is the older but always acts so childish? “Satsuki's premeditated question caught us off guard, while a mocking grin that says “Vengeance” drew on all her face, making me laugh outrageously.
“You know Kaho-chan I wouldn´t mind if you call me Reanko onee-chan too.”
“NO!!!” A childish scream coming from Ajisai called our attention before she tackled me, hanging on my neck in a possessive way. “Renako onee-chan is mine!”
I forgot that this little sister tends to be jealous. Probably I shouldn´t have teased Kaho, but it was the perfect chance to take revenge. The bright red face on Kaho due to Satsuki's comment is delightful, especially after teasing her.
“Rena-chin… Sa-chan, I will take my revenge later! “She declared war on us, making me smile.
“But Kaho is already like the little sister of the group, so I wouldn´t mind if she called me onee-chan too.” Even Mai joins in the teasing, making Celeste's hair even more ashamed, before Mai was captured too by a possessive Ajisai.
“Even Maimai!? This is unfair, three vs. one, teasing her girlfriend! I asked for a fair match! Are you with me, Ajisai-chan!?” Try to use the mentally regressed girl in her favour, while she just got a judgmental look from her.
“Kaho-chan can´t steal onee-chan´s attention!” Regressed Ajisai pouted, crossing her fingers in an x while marking territory.
“Come on A-chan! I´m not stealing your attention, even I would spoil you too! I would take care of you, too!”
The fight back was something adorable, while Kaho insisted on taking care of her too, and wanting to be recognized like the oldest of the group, Ajisai-chan was judging her like the second youngest mentally after her.
Like that, our Date movie afternoon turned into trying to enjoy a movie while Satsuki designed some activities for Ajisai-chan to be entertained, I cuddled her when she asked to be hugged, and Mai, not dissimulating her intention to buy some stuff for her mental state, while Kaho sat next to her, helping with colouring and some games. Was something different? I just expected that the next date would stay romantic, but now that I know, Ajisai feels secure enough to “regress”, as Mai called. With us, I don´t mind having some time after the date to help her with it.
Finally, due to Mai's advice, until Ajisai returns to her normal mental state, the three of us decided to ask for permission from home for a sleepover. I was the one who had to handle Ajisai's parents with Mai to get their permission.
Feeling how almost at 8 pm, a weight over me got lighter while the gazed of Ajisai changed completely into one full of shame, while she was burning red in her faced.
“Mmmm Rena-chan?” A soft, yet more mature tone of voice came out like a signal. – “Did I end up behaving like a little girl while we were on a date?” she muttered softly, almost asking for the earth to open a hole down her.
“It's okay, it was adorable. Everyone falls in love with five-year-old Ajisai.” I try to calm her down by just ending in a big pout, a rising voice, and complaining.
“Oh, A-chan, you´re back! Would you like something to drink?” A Kaho with glasses came to the living room with a slight grin before sitting between my legs, lying on me.
“Mmm, no… is okay, sorry for the weird moment, Kaho-chan. I should have apologized to Mai-chan and Satsuki-chan, too.”
“Don´t need to be sorry, was cute and we are…” before saying the word' girlfriends' the shy, predominantly shy personality with her glass takes the lead, muttering the word, a little blushed.
“…your girlfriends after all.” Shrinking on me, not being able to resist the urge to kiss her on the cheek, seeing her panic a little bit, shrieking even more.
“If it happens again, we will be there to support you, Ajisai. I´m always willing to be your onee-chan, after all, you are so adorable like that. Well, you are always the cutest in the world. I want to make you happy.” I try to console her clumsily before kissing her on the cheek, trying to make her lie down on my body, something that immediately turns into a hug.
“Dumb Rena-chan.”
“Yeah, Rena-chin, you dummy!”