The Door of My Bathroom Leads to the Comic World!

"But Itsuki, you're definitely the fattest among us."

Ichika lay sprawled across the sofa, swinging her little feet while smirking.

"You're practically a walking meatball."

Nino commented nonchalantly as she fiddled with her phone.

"Meatball monster?"

Sui couldn't help but chuckle at the nickname—it felt oddly fitting.

After all, when this girl gets mad, her round cheeks puff up just like a stuffed bun.

He didn't notice that Itsuki's face was already red, almost as if it might burst.

"When Itsuki sits down, her belly fat could easily be pinched into a bun."

Nino continued to expose her sister's supposed flaws without holding back.

"Is that true?"

Sui laughed again, though in truth, he preferred girls with a little more flesh. Someone like Itsuki, for instance, who wasn't too skinny or too heavy—just perfectly plump and soft.

He recalled Erina's thick, voluptuous thighs, which also felt pleasant to touch.

Suddenly, a sharp pain shot through his foot. Sui instinctively thought it must have been Kasumigaoka playing her usual pranks, but when he looked down, he saw a round, pinkish leg.

At some point, Itsuki had stepped in front of him, planting her foot on his with a fierce look in her eyes. Her large chest trembled with her movement, making her appear even more voluptuous.

"What are you laughing at? Do you find something funny?"

She puffed up her cheeks angrily and glared at Sui, who was sitting on the sofa.

"Uh, it's nothing… I just thought the nickname suits you."

Sui cleared his throat awkwardly.

"Suits me? You think that nickname suits me?!"

That comment clearly hit a sore spot.

Her face flushed even redder as she clenched her teeth. Then, in a sudden burst of determination, she made a surprising declaration.

"Fine! If you think that, why don't you just hug me? Once you do, you'll realize I'm not fat at all."

Sui blinked in disbelief. Did she seriously just ask him to hug her?

Caught between wanting to laugh and feeling at a loss, Sui realized she really cared about her weight, though in his opinion, a bit of chubbiness only added to a girl's charm.

"Hurry up!" Itsuki urged, opening her arms, her face now fully flushed.

Sui instinctively glanced at Utaha, who was sipping tea, seemingly indifferent to what was happening. However, her legs, clad in black stockings, tapped the floor lightly—perhaps a subtle warning.

"Well? Are you a man or not?" Itsuki barked, growing impatient.

"Alright, alright." Sui stood up and carefully lifted the blushing Itsuki into his arms.

Her thighs felt soft and smooth beneath his hands, a faint, sweet scent rising from her skin.

"So, how is it? I weigh the same as Yotsuba, right?" she asked, her face still flushed.

"Yeah, you're just like Yotsuba," Sui agreed, genuinely surprised. Despite looking chubbier, Itsuki weighed about the same as her sisters.

"See? I told you I'm not fat," Itsuki said, shyly but triumphantly, as she returned to the ground. Feeling a bit more self-assured, she glanced at Sui for confirmation.

"Yeah," Sui nodded, sitting back down—only to feel a familiar pressure on his foot again.

Utaha-senpai, evidently feeling particularly possessive today, stepped on him with her black silk-covered foot. 

"Now that you've had your fun, shouldn't it be time to focus on studying?" Utaha said coolly, setting down her teacup.

However, the five Nakano sisters, except for Yotsuba, were busy with their own activities, completely ignoring her.

Sui had already gained some insight into these five troublesome siblings. 

Ichika was mature but secretly lazy. Nino had the typical tsundere personality, with a slightly devious streak. Miku was introverted and somewhat gloomy, often blending into the background. Yotsuba was the lively and simple one, though a bit slow-witted. Lastly, Itsuki was straightforward but not exactly the best at expressing her feelings.

Utaha sighed, trying to stay composed. "I may just be your temporary tutor, but as girls, it's important to have some inner qualities. You don't want to grow up into useless women..."

Sui blinked in surprise. He didn't expect Utaha to be so serious about teaching them.

"What do you mean by 'useless'?" Nino put her phone down and frowned. "Kasumigaoka-sensei, isn't it true that you rely on men to even wash your underwear?"

Utaha's face turned beet red, her confidence visibly shaken. "Th-That's because..."

"If that's the case, let's see how we compare on those 'inner qualities' you were talking about!" Nino smirked. "What about doing laundry? Or washing dishes?"

Utaha's expression faltered.

"And cleaning? How about that?" Nino continued relentlessly.

Utaha's aura weakened further.

"Can you at least cook? Or is that also beyond you?" Nino pressed.

Utaha, who couldn't cook, looked even more flustered.

"So, you're basically just a shut-in? You can't even be a proper wife." Nino crossed her arms, a proud smile on her lips.

Seeing his senpai lose face in front of her students, Sui stifled a laugh—until he quickly stopped.

"Maybe I don't have those domestic skills," Utaha grumbled. Then, to everyone's surprise, she grabbed Sui's arm, pulling him close. "But my boyfriend does. Isn't that good enough?"

Sui stared at her, speechless. 'When did I become your boyfriend?'

"If you can beat my boyfriend in a cooking competition, I'll excuse you from class for today," Utaha announced, grinning as she held onto Sui's arm.

It was clear that after losing face earlier, she wanted to reclaim her dignity as a sensei—by suddenly declaring Sui her boyfriend.

"A cooking competition, huh?" Nino smirked. "You really said it."