As early as when Katsura Kotonoha arrived at the front door, the loli Katsura Kokoro had seen her from the window.
Upon seeing Lin Mu's handsome and dashing appearance, Katsura Kokoro's eyes instantly lit up.
In her opinion, this was probably her sister's boyfriend.
After all, her introverted sister wouldn't easily bring a boy home as a guest, unless it was someone she trusted deeply.
So, with the intention of building a good relationship, Katsura Kokoro took advantage of her sister opening the door and greeting him, and darted into the handsome and dashing man's arms, even rubbing her cheek against his abs.
Huh, he actually has abs!
Not only is he handsome, but his physique is also good. Sister really knows how to pick a boyfriend.
"Xin Jiang, look carefully before you hug, that's very rude!"
Katsura Kotonoha's small face also flushed when she saw her sister's actions, and she quickly pulled her away.
Katsura Kokoro reluctantly left the handsome elder brother's embrace, but she didn't care about Big Sister's shyness, instead, her gaze fell on Lin Mu with burning intensity.
"Hey, Big Brother, you're so handsome. Are you Big Sister's boyfriend?"
Lin Mu smiled and patted her little head, pulling out a gift box from behind him and handing it to her.
"That depends on when Kotoha agrees to be my girlfriend. You must be Katsura Kokoro, you're really cute. I'm Lin Mu, and although we don't go to the same school, Kotoha and I were elementary school classmates. This is for you, a gift for our first meeting."
"Ah! A gift! Onii-chan is so thoughtful, then I won't be shy. May I open it?"
Katsura Kokoro looked at him in surprise, her eyes full of anticipation.
"Of course you can."
Lin Mu nodded with a smile.
Katsura Kotonoha was a little puzzled; where did he pull out the gift from?
But thinking of his mysterious nature, she felt relieved.
Katsura Kokoro happily unwrapped the gift box, and when she saw a sapphire necklace, she gasped with delight.
"Ah! What a beautiful necklace, and with a gem! Onii-chan, can I really accept it?"
Katsura Kotonoha was also startled; this gemstone necklace, at a glance, was clearly not simple, not ordinary merchandise.
"Mu-kun, this gift is too valuable!"
"It's fine, I made it myself. Please accept it. And by the way, this one is for you, Kotoha. It can protect your safety, so please be sure to wear it well."
Lin Mu said, then pulled out another ruby necklace and placed it around her delicate, snow-white neck.
"Eh. I have one too? I… I… thank you."
Meeting his burning gaze, she couldn't bring herself to refuse.
"That's more like it."
Lin Mu nodded with satisfaction.
Katsura Kokoro, on the other hand, looked at Lin Mu with a hint of resentment, feeling inexplicably a little sour.
Why did she feel like she had become a tool for Onii-chan to curry favor with Big Sister?
He truly wanted to give it to Big Sister, and she was just an afterthought?
"Um, Mu-kun, please sit down first. I'll go get you a drink."
Katsura Kotonoha touched the necklace on her neck, her tone unconsciously becoming gentle.
Lin Mu smiled and nodded, sitting on the sofa.
Katsura Kokoro, meanwhile, leaned over and hugged his arm. "Onii-chan, how are your grades?"
"Well, I'm first in my grade, but is it really okay for you to ask that? If I were a slacker, I'd feel embarrassed."
"Hehe, if Onii-chan says his grades aren't good, then Katsura Kokoro will improve with you."
"You little girl… so mischievous."
Lin Mu looked at her big, constantly rolling eyes and couldn't help but reach out and ruffle her hair.
Katsura Kokoro looked delighted, and she leaned into Lin Mu's ear. "Actually, I'm stuck on a math problem right now. If Onii-chan guides me, I can show you something good."
"Uh… excuse me, what kind of good thing?"
Katsura Kokoro's lips curved slightly, and she continued to lean into his ear, seductively whispering in a soft voice:
"It's Big Sister's waking-up photos, and all sorts of alluring poses! Nanan, Big Sister's chest is really big…"
Lin Mu swallowed.
You're testing a cadre with this?
Hehe, you're a good judge of character!
Lin Mu seriously ruffled her hair. "You don't know that problem? Brother will teach you until you get it!"
"Hehe, then Onii-chan, come with me, to my room!"
Led by the hand by the loli, he entered her room.
Lin Mu felt like he had been tricked by her.
How could this little girl be so… clever?
If it weren't for her being so young, he would really want to educate her, to tell her not to be so unguarded with men.
After entering the room, Katsura Kokoro pulled him to sit on a chair.
Then, she plopped down on his lap and unconsciously wiggled a bit.
Lin Mu was quite speechless.
This was truly testing his self-control…
Katsura Kokoro breathed in his strong masculine scent, her cheeks also slightly flushed.
"Lin Mu Gege, hurry up and teach me the problem. You're not thinking bad thoughts, are you? That's not allowed, you have to wait a few years for me to grow up."
Lin Mu couldn't help but pinch her little face. "What are you talking about, little girl? You're not allowed to be this intimate with boys in the future, understand?"
"Men are all very, very bad. They'll eat up and wipe clean cute girls like you."
Katsura Kokoro smiled mischievously, resting the back of her head on his chest.
"Of course I know boys turn bad when faced with cute girls, but Gege, you were brought home by Big Sister, and Big Sister wouldn't casually invite boys home."
"So, Xin Jiang thinks Onii-chan must be a super gentle, super good man. You won't bully Xin Jiang, right?"
Lin Mu paused, then ruffled her hair again.
"I won't bully you now, but wait until you're a few years older, and see if I bully you!"
Katsura Kokoro wasn't angry, she just smiled even more brightly.
"Then it seems, Xin Jiang's charm is not inferior to Big Sister's, right?"
"Yes, so cute Xin Jiang, isn't it time to study?"
"Hmm, Onii-chan is so unromantic, you're holding me and still thinking about studying."
Lin Mu: "… … …"
Who asked him to tutor her?
This little girl really needed a good talking to, seducing him like this.
Too bad.
Can't touch her, she's too young.
She wasn't like Ai Li 0.2, a small-statured imp.
Katsura Kokoro was a genuine little girl, and Kotoha's sister, so he couldn't touch her.
So, to prevent this little girl from continuing to flirt with him in an adult manner, Lin Mu straightened his face and entered 'academic genius mode'.
He began to seriously guide her with her homework.
Kotoha, who came in with a fruit plate and drinks, looked at the two getting along well, and her heart was instantly filled with immense relief.
She had been afraid that her sister wouldn't adapt to a stranger's arrival and would reject Mu-kun.
Now it seemed, she had overthought it.
Xin Jiang obviously liked Mu-kun a lot.
Hmm… but wasn't it a bit too intimate?
Sitting in Mu-kun's arms…
Kotoha suddenly felt a little sour…
Realizing that she was actually jealous of her sister, Katsura Kotonoha's cheeks immediately turned completely red.