All Beautiful Girls Want to Stick with Me

Izumi Kotomi asked Yui Yuigahama to explain the high school math concepts she knew.

The result? What Yui could recall was pitifully little.

Some of the things she mentioned didn’t even exist—Kotomi couldn’t help but be impressed by Yui’s ability to make things up. In ancient times, she might have been called a ”math prodigy.”

Kotomi sighed and rubbed her forehead, black lines forming on her face.

No wonder Yui said the test questions were all from her blind spots—her knowledge gaps were so massive, it was more surprising if they weren’t covered!

Kotomi picked up her pen and pointed to the first question.

”The first question tests what we learned last week—the concept of sets and operations. Get your math textbook and the notebook Yukinoshita lent you yesterday. Have you copied everything down?”

”Yep, I finished copying it,” Yui replied quickly, nodding.

”Good. Take out the notebook, too. Now, open your math book to Chapter 1, Section 2—Relations of Sets. You definitely won’t be able to solve the question right away, so I’ll walk you through it again.”

Though most of the key points were in her notebook, sometimes it was necessary to mark up the textbook as well. Yui’s textbook, however, was as spotless as a brand-new book.

How clean was it? After finishing the first year, she could probably resell it to younger students as if it were unused.

As Kotomi explained, Yui focused intently, listening even more seriously than she did in class. Her expression of concentration was far beyond anything she showed at school.

But... had Yui ever looked this serious in school? Probably not.

Kotomi felt as though after unlocking her ”God-Level Heroine System” and gaining enhanced learning abilities, she’d also acquired the skills to teach others. She held a blue pen, marking key points in Yui’s math book, slowing down her pace when they reached practice problems, carefully explaining how to solve them.

She even gave Yui tips on how to approach similar problems during exams—how to get as many points as possible even if she couldn’t solve the entire problem.

As Yui diligently studied, she occasionally sneaked glances at Kotomi.

She noticed that Kotomi wasn’t just academically impressive—her body was perfect.

Her eyebrows, her eyes, her nose, her lips, her neck, her scent...

No matter how she looked at her, Kotomi was stunning!

Every guy—or girl—must dream of having a girlfriend like her, right?!

Yui’s mind, completely out of her control, started filling with rainbow-colored bubbles. The train of thought that had been following the problem-solving strategy drifted away, only to float in Kotomi’s direction.

Luckily, Yui had a bit of rationality left. She reminded herself that Kotomi was spending her free time tutoring her. Not paying attention would be a huge disservice to Kotomi!

Yui quickly refocused most of her attention on Kotomi’s explanation.

Kotomi was fully aware that Yui’s math skills were poor, especially in science-related subjects. Yui’s gaps in knowledge made Kotomi’s struggles in her previous life look minor in comparison.

Kotomi knew how frustrating it was to struggle with math—it wasn’t just about not working hard; sometimes, it was simply incomprehensible!

So, when tutoring Yui, Kotomi was incredibly patient. In fact, she hadn’t been this patient even when teaching her sister, Aimi.

Wait... had she ever tutored Aimi? Nope, not once.

After explaining each step, Kotomi would ask, ”Did you understand?”

Only when Yui confirmed that she had understood would Kotomi continue.

Kotomi’s thorough and patient teaching style was so detailed and clear that even a pricey one-on-one tutoring session might not provide such a careful explanation.

Tutoring in Japan was expensive—just one session was enough to make your wallet ache.

And yet, all Kotomi asked for was a cake.

Yui thought to herself how lucky she was. She resolved to study hard and, after the monthly exams, bake Kotomi a huge cake as thanks!

If possible, Yui wanted to bake Kotomi a seven-tier wedding cake! Imagine how happy cake-loving Kotomi would be to receive something like that!

The only downside was the high cost, not to mention that Yui didn’t know how to bake such a massive cake. She’d have to ask her mom to help.

But Yui really wanted Kotomi to taste a cake she had baked with her own hands.

Even if she could make it, Kotomi probably wouldn’t let her.

What kind of cake should I bake for Kotomi? Yui’s mind began to wander.

”Yui, Yui, Yui?”

Kotomi’s voice snapped Yui out of her thoughts, and she stammered in a slight panic, ”Wh-What is it?”

”Nothing much. I’ve just finished explaining the whole problem. Did you understand it?”

Even though Yui had no confidence in saying she’d understood, she reflexively nodded.

The moment after nodding, Yui realized her mistake. Oh no.

Seeing Yui nod, Kotomi assumed she truly understood. She picked a similar problem from the textbook and placed it in front of Yui.

”This question is similar to the one I just explained. Take your time to read it carefully and try to use the problem-solving method I taught you. Don’t panic if it seems difficult—just try to understand and analyze it. When you really can’t figure it out, ask me for a hint.”

Despite still feeling unsure about her comprehension, Yui had no choice but to nod again. She picked up her pen, furrowed her brows, and looked at the problem.

Math problem, please go easy on me and become simpler!

At first glance—oh no, it was complete gibberish. The question was written in plain language but felt like it was from another world!

Second glance—wait, maybe I know how to approach this?

Third glance—wait a minute, I’m starting to understand everything!

Yui began tentatively writing out the solution on the blank space, telling herself to stay calm, stay calm, and follow the process Kotomi had just taught her.

No need to panic—just stay cool, like when copying homework before class!

”The number of non-empty subsets of set C is… 15.”

Yui’s hand trembled slightly as she wrote her answer, then she carefully turned to Kotomi and asked in a small voice:

”Kotomi… is my answer right?”

”Let me see.”

Kotomi leaned in close to check Yui’s solution, her face so near that Yui’s cheeks turned a little red. As Kotomi focused entirely on Yui’s work, Yui couldn’t help but notice the subtle contours, the soft curves of Kotomi’s cleavage visible from this angle. Flustered, her heart raced, but Kotomi remained unaware, fully absorbed in the answers in front of her.

Kotomi had already solved the problem in her head earlier, so when she saw that Yui had arrived at the correct answer, with steps that were mostly accurate, she couldn’t help but feel a surge of joy.

She’s teachable! Seems like Yui isn’t as hopeless as I thought.

”Congratulations! You got the correct answer. Can you explain to me how you arrived at it?”

Hearing that she’d solved it correctly, Yui breathed a long sigh of relief, suddenly feeling much more motivated. She perked up and began explaining her thought process and reasoning to Kotomi.

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