Itsuki's Preemptive Strike?

　　Saturday night, Summer Festival.

　　Shinichi explains to Fumino about the fake girlfriend. Even though he was full of embarrassment, he still spoke honestly.

　　"In order to prevent me from becoming so popular among girls, Rui decided to become my fake girlfriend and stimulate the emotions of the girls around me."

　　When he told her about Ichika being angered by Rui today, that made Fumino sigh in disbelief.

　　"Putting aside the fact that you, a bastard, should be beaten to death by an unpopular man in the world, is this strange idea really useful..."

　　"I don't know, but I don't want to disappoint her kindness, so…" Shinichi looked at Fumino with a serious expression on his face.

　　"Stop talking, I understand!"

　　Shinichi's mouth twitched slightly.

　　"What else do you know?"

　　Fumino puffed out her bare chest, looking incomprehensible.

　　"Young man, do I not understand you? You must have seen that Rui-chan was misunderstood by us as a bad person, so you wanted to explain to us first so that we don't hate Rui-chan. Look at the embarrassed look on your face, of course you want to do something to get Rui-chan back, and you need my help, right?"

　　Basically all the hits.

　　"What..." Shinichi didn't believe it this time.

　　"The sum of the products of two sets of opposite sides of a convex quadrilateral is not less than the product of the two diagonals. If and only if the quadrilateral is a circular quadrilateral, what is the formula for these two quantities? The answer is in my head."

　　If Fumino could read minds, she would know that the answer to this question was Ptolemy's formula.

　　 Fumino pretended not to hear, and smiled proudly.

　　"This is nothing to worry about. This is just the experience I accumulated through long-term high-intensity observation of you…"

　　This sentence almost came out, and Fumino immediately held it back with a red face, and continued to speak

　　"Okay, let me know if you need my help! I usually pay too much attention to Asada-kun, and it's hard to get a chance to repay her. I will not be merciful!"

　　"Thank you very much." Shinichi smiled, and quickly told her his plan.

　　"Asada-kun, I didn't expect you to siscon this far..."

　　"What are you talking about?" Shinichi replied displeasedly, "True love between brother and sister, don't insult it with just the word 'siscon'."

　　"It would be a bit disgusting if you kept talking..."

　　With a tacit understanding, the business talk quickly concluded. The two chatted a few words with each other before returning to Rui's side.

　　At this time, Shinichi spoke hesitantly.

　　"Furuhashi, that's..."

　　"What is it?" Fumino turned her head and when she met his eyes, she was shocked.

　　Then she seemed to realize something, her heart skipped a beat, and her face began to blush slightly.

　　"I wanted to say... I was right... No, it was you..."

　　Rarely, Shinichi hesitated and felt useless.

　　"Forget it, it's fine. Let's go, remember not to let Rui see the clues."

　　"Hey, why is this…" Fumino wanted to ask. An idea came to mind, then puffed up her cheeks and poked him hard on the back.

　　"I understand! Asada-kun, are you imitating me on purpose?!"

　　"No." Shinichi didn't need to look back to know that Fumino was dissatisfied.

　　"Liar! Asada-kun is very narrow-minded. You must have heard half of what I just said before you pretended…"

　　Shinichi interrupted her without hesitation.

　　"I just wanted to say that you look really good in your yukata."

　　Of course that wasn't what he wanted to say.

　　However, when the words Shinichi used to cover up came out of his mouth, Fumino felt her face heat up.

　　"…"

　　There was silence, and the sound of clogs hitting the ground became quieter.

　　"...Thank you. Your casual clothes are also very handsome…"

　　The small voice sounded.

　　The two of them walked like this.

　　The surrounding environment is obviously very lively.

　　△

　　During the festival, Rui and Hina have fun, while Shinichi exchanges messages with the quintuplets.

　　After Ichika returns, she tells them about the fake relationship. Of course, Shinichi was bombarded with messages.

　　Because Ichika explained it first, no one asked why he did that. But because of that, Shinichi had difficulty responding to the messages they sent.

　　Nino: [We only confessed our feelings to each other two days ago, and now you're telling me that you're seeing someone else? I can understand how you feel thinking about your little sister, but I'm still very angry!]

　　It feels like Nino is sending this message just by putting herself in the girlfriend's perspective.

　　Realizing Nino's true purpose in wanting him to comfort her, Shinichi answered.

　　Shinichi: [Drink more hot water, get up early and exercise, go outside for a walk, and your mood will feel better]

　　Miku: [Shinichi, what can a fake girlfriend do?]

　　Questions that seem simple actually lurk fatal dangers.

　　Shinichi couldn't believe how deep Miku was, she was probably just asking out of curiosity.

　　But he couldn't answer casually, otherwise Shinichi's reputation as a siscon wouldn't be erased once word got out.

　　After all, they were friends, and Shinichi didn't want to be called that by them with insulting looks.

　　Shinichi: [It's nothing. Holding hands and hugging are just things that brothers and sisters do]

　　Miku: [Then is there something missing?]

　　Shinichi: [What's missing?]

　　Miku: [Fake girlfriend position...]

　　Shinichi: [Sorry, no. It's not like I'm dating Rui for fun]

　　Miku: [I understand... Um, I don't need that kind of thing]

　　Shinichi pretended not to see the implications of her words, and it was the next person's turn.

　　Yotsuba: [Asada-san, you are a good person!]

　　Shinichi typed on the keyboard without expression.

　　Shinichi: [Yotsuba, you rabbit!]

　　Yotsuba: [Why?]

　　Shinichi: [Because I'm not a good person]

　　Not wanting to understand Yotsuba's brain circuitry, Shinichi changed the screen again.

　　Itsuki: [Asada-kun, I can understand your predicament, but is there a better way...]

　　Shinichi : [Maybe. However, the time to choose has long passed, and now I can only respond to Rui's kindness and do what I can before she leaves. I'm really sorry for making things difficult for you]

　　Itsuki: [If you treat strangers like this, I won't promise you anything]

　　Shinichi: [Uh... Are you bothering me?]

　　Itsuki: [Yeah, right. Asada-kun, please remember that you are not only our friend, but also a benefactor who helps us with forest school, academic performance, etc. It doesn't matter if you open your heart a little more. As long as you ask, I will help you do anything]

　　"Ha..."

　　Shinichi covered his forehead, sighing heavily.

　　With this girl's honest character, sooner or later she would be tricked into food or favors.

　　In this case, good girls must not fall into the hands of outsiders, so Shinichi might as well attack first!