First Base:
💋 Kissing
Includes: making out, French kissing, passionate kissing.
It's the first step of physical intimacy beyond hand-holding or hugging.
Second Base:
👐 Touching Above the Waist
Includes: fondling, groping, or caressing breasts or chest (through or under clothing).
This base marks the beginning of more sexually charged contact.
Third Base:
🖐️ Touching Below the Waist
Includes: manual stimulation or oral sex (this part varies depending on who you ask).
It's the last base before full intercourse and involves a high level of physical intimacy.
Home Run (Fourth Base):
⚾ Sex / Intercourse
Reaching "home" means full penetrative sex (vaginal or anal).
It's typically considered the climax of physical intimacy.
BONUS – "Going Past Home" or "Extra Innings"
🔥 Anything beyond traditional sex
May refer to kinks, BDSM, threesomes, or other non-standard sexual activities.
This is more modern slang and less universally defined.
*******
The so-called third base— In love, it refers to deeply intimate contact, like caressing and heavy petting. Kasumigaoka Utaha had just been rounded to third base!
How should one describe it? The process left her feeling slightly dazed, her cheeks faintly flushed. A tingle, like a soft electric current, lingered faintly across her chest... thrilling and oddly addictive.
"..."
Afterward—
"The essay topic is 'Spring Break Life,' and it needs to be at least 800 characters. Make sure to imitate my handwriting properly."
Snapping out of her reverie, still carrying the lingering warmth in her heart, Kasumigaoka Utaha went back to her room. She returned with composition paper and a pen, placing them with deliberate elegance in front of Kasumigaoka Touji.
"Eh?"
Kasumigaoka Touji blinked up at her, his face full of confusion.
"What do you mean, 'eh'?"
Kasumigaoka Utaha frowned, sensing something ominous. Her eyes narrowed as she crossed her arms, radiating big-sister pressure.
"Touji-kun, don't tell me you think you can just get away with copping a feel for free? After taking such bold liberties, shouldn't you be helping me out a little?"
Her slender fingers expertly pinched his earlobe as she spoke, her tone sweet yet terrifying.
"Ugh..."
Touji looked conflicted for a moment, then quietly reached into the drawer and pulled out a shiny five-yen coin, gently placing it into her palm.
This way it wasn't a freebie, right? He looked at her with an innocent, clever smile.
"...Are you insulting me right now!?"
Utaha's brow twitched, her eyes darkened, and she reached for his ear again with frightening familiarity.
"Oi, oi! I was just joking! Don't go for the ear, that's dirty fighting!"
Touji struggled to peel her hand off his ear, grumbling with a pout, "If you're that confident, then let's settle this head-on! No more sneak attacks!"
"Unfortunately for you, I'm not confident at all, so I'll keep twisting your ear."
Kasumigaoka Utaha leaned casually against the desk. The hem of her oversized hoodie brushed the edge, subtly revealing the curve of her hips. Her long legs, wrapped in dark stockings, stretched down like glossy silk pillars—utterly mesmerizing.
Touji's gaze wandered for a moment.
Utaha noticed immediately. "...Touji-kun, what about my essay?" Her voice dripped with mischief.
"Do your own homework, geez... But I'll stay with you while you write! That counts as moral support, right?"
Touji held her hand and gave her a sunny grin.
"So, your version of support is sitting there reading while I do all the work?"
"Exactly! Like how you 'supported' me last year, remember?"
"I need a warmer kind of support," Utaha mumbled, fighting to break free from his teasing grip.
"Then how about you sit on my lap while you write? I can hold you the whole time. Super warm, right?"
"You really are the worst! A villain! A perverted little brother!"
Unable to win the verbal battle, Utaha snatched back the pen and paper with an exaggerated pout and returned to her seat.
Touji followed with his light novel in hand, settling beside her. He had promised to keep her company, and he was a man of his word.
...
Time passed peacefully, and before long, the afternoon sun poured into the room.
Around 1 PM—
"Buzz buzz~"
The phone on the table vibrated. Touji glanced at the screen.
It was a message from their mom in the family group chat.
[Mom]: "We just arrived at the apartment!"
[Touji]: "That fast?"
[Mom]: "We took a plane! And the apartment's super close to the airport. Only about twenty minutes by taxi."
[Touji]: "Ohh, that explains it."
Right after, a video call notification popped up.
Touji accepted, and the screen lit up with a beep.
"Hmm? You're in Utaha's room?" Kasumigaoka Airi squinted at the background, quickly recognizing her daughter's bedroom from the familiar decor.
"Yup. I'm playing the supportive Otouto-kun role today, keeping her company while she battles her mountain of homework," Touji replied with a calm smile.
With a quick tap, he switched the camera to show Kasumigaoka Utaha seated at the desk. She glanced over, clearly catching on to the conversation.
"Haa~ last year it was Utaha-chan who was helping you cram, and now it's your turn to return the favor. The circle of life, huh?" their mother laughed warmly from the other end.
"That's what you get when you have two procrastinators under the same roof," Touji said with a helpless shrug.
Just then, Utaha leaned closer to get a better look at the screen. Touji switched the camera back to show their faces again.
"Mama, you've arrived already?" Utaha asked, momentarily putting down her pen.
"Yep! Your father and I just got to the apartment. We only landed an hour ago." Airi moved her phone to reveal Kasumigaoka Eiji in the background, standing next to a neat stack of luggage. He gave a light wave.
"Have you two eaten?" Eiji asked, a smile on his face.
"Yes, Touji made steak pasta," Utaha said, stretching a little. "It was surprisingly good."
"Oi, don't sound so surprised," Touji complained under his breath.
"We grabbed a bite on the plane. Chicken curry and bread rolls. Pretty standard fare," Airi said. She then excitedly offered them a virtual tour of their new Hokkaido apartment.
The camera swung from room to room—two bedrooms, a compact kitchen, a sunlit living area, and a cozy balcony that overlooked a row of cherry blossom trees just beginning to bloom.
"This room here will be yours when you come visit during summer vacation," she said, showing them a study with tatami flooring and a kotatsu already set up.
Touji's eyes lit up. "That looks super comfy! Now I really can't wait for summer."
"Oi, school hasn't even started yet and you're already dreaming about summer break?" Eiji chuckled.
"Well, it starts the day after tomorrow, so I'm just… planning ahead!" Touji replied with mock innocence.
"When school starts, stay close to Utaha-chan, okay? If you get confused, don't try to act tough. Ask her or your teachers."
"Got it," Touji said, nodding obediently.
Before ending the call, Airi reminded them not to buy any new groceries and to finish up what was left in the fridge. She promised to ship them some goodies from Hokkaido soon.
After saying their goodbyes and hanging up, peace returned to the living room.
Touji continued lounging on the beanbag chair, reading the last few pages of his light novel, while Utaha returned to her desk with a small sigh, refocusing on her essay.
Time slipped by, and before they knew it, the sky outside had turned an indigo hue.
"You're not writing anymore?" Touji glanced up.
Utaha stretched, her arms raised high over her head, then gently nudged his leg with her foot. "What? You sound like you're disappointed."
"A little. I was planning to pull an all-nighter with you. You know, for moral support."
Utaha raised an eyebrow, her expression unreadable. "If by moral support you mean playing on your phone while I struggle in silence, then no thanks."
"I offered my presence! That's valuable!"
"I'll punch you."
She shook her delicate white fists threateningly before waving him off like a stray cat.
"Go back to your room, baka. I'm going to shower and head to bed."
Touji stood up, stretching. "Utaha-senpai~, do you require back-scrubbing services? Professional and discreet."
Utaha's eyes glinted like a mischievous cat. "Only if my adorable kouhai begs."
Her wine-red gaze shimmered like velvet, the smile on her lips both elegant and dangerously enticing.
Touji didn't even hesitate. He put his hands together in mock prayer and said with sparkling eyes:
"Onegaishimasu!"
Utaha: "...Baka."