"Brother's face is so cute when he tried to hide it," Sophia murmured as she didn't seem to be embarrassed seeing it.
Alex's face blushed even harder as he tried to submerge himself underwater, but Katherine pulled him back to the surface.
"Okay, don't make fun of your brother... Let's get out of the water for a bit to scrub each other's back now."
A loud water drop could be heard as the four of them got out of the bathtub and sat down on the small wooden chairs.
As Katherine grabbed a bar of soap and began scrubbing Alex's back, Sophia grabbed another bar and began scrubbing Mary's back.
After scrubbing for a while, the two of them shifted to the front before moving down to their legs.
"Mom, I can do this——"
"Not again. Come on, don't be shy."
Katherine's determination made Alex back down again as he let her clean his crotch area.
With the entire body scrubbed clean, Katherine began rinsing all the soap from Alex's body before handing the showerhead over to Sophia.
"Mom... Can I scrub your body?" Alex asked, feeling a little guilty for having Katherine clean up his body every time.
"Look like my little boy is all grown up... How could I say no to that?"
Katherine turned around, letting Alex begin scrubbing her back with the bar of soap.
"You can put more weight on it. You're scrubbing it too lightly." Katherine advised as she closed her eyes.
Alex began throwing in more elbow grease as he scrubbed it much harder than before.
Seeing her not commenting anything back, Alex maintained the scrubbing intensity until he finished scrubbing her back.
"Sophia! Let me scrub you as well!" Mary excitedly announced, copying what Alex was doing for Katherine.
"Fine, but you better scrub hard enough——Ouch, don't scratch your fingernail on me."
As the other two just started scrubbing the other person's back, Alex was now at a crossroads.
But after a short silence, he made up his mind.
"Mom, can you turn around? I need to scrub the front, too."
Katherine didn't hesitate as she turned around to face Alex, with both of her hands on the side to let Alex reach every part of her upper body.
Alex quietly gulped down his saliva as he nervously moved his arm forward to begin scrubbing her chest and arms.
When he moved down to her breasts, he noticed Katherine's face blushing a little.
She even let out a small sound as Alex accidentally scrubbed onto the nipple.
Still, she doesn't ask Alex to stop, letting him finish scrubbing her upper body until he reaches down to her belly.
As Alex took the soap further down, Katherine was getting ready to ask Alex to stop.
However, to her surprise, Alex skipped the crotch as he moved onto her legs and began slowly scrubbing her thighs all the way to her ankles.
"Um, Mom, y-you can do the rest," Alex replied shyly as he handed the soap back to her.
"Thank you, sweetie."
With a few fast scrubs around the crotch, Katherine signaled Alex to begin rinsing her body.
As the showerhead sprayed water onto Katherine's body, Alex's head was all over the place as he still couldn't believe what he had just done.
His mind was still glued to Katherine's crotch when he was scrubbing her inner thighs, a little trimmed bush right above her closed labia.
He wanted to see what was behind it, opening it with his finger to reveal her deepest secrets.
But Alex quickly slapped himself in his mind for even attempting to think of Katherine as something else when guilt began to set in.
"Alex?"
"Sorry!"
Alex quickly snapped back to reality as he began carefully rinsing Katherine's body, making sure all the soaps were completely gone.
---
When the four were out of the shower, it was already ten o'clock at night.
"Mom, can we sleep together today?" Mary suddenly pleaded just as Katherine was about to bring them back to their room.
After a short consideration, Katherine agreed to it.
"Only for today. Tomorrow, you guys have to sleep in your room."
"Yay!"
As the four of them entered the master bedroom, Mary immediately jumped onto the bed, picking to be on the left side of the bed.
Meanwhile, Sophia picked the right side of the bed, leaving Katherine and Alex sandwiched in the middle.
"Goodnight, everyone." Mary excitedly said out loud as she pulled up the blanket.
"Goodnight."
As the light automatically turned off, everyone soon fell asleep on the bed except for one person.
This time, it wasn't Alex.
Instead, it was Katherine who was still thinking about what had happened in the bathroom.
"Alex... He's growing up too fast." Katherine thought to herself as she started to realize something about Alex.
He had always seemed to be shy when he was naked, even when he was a little kid, where awareness of being naked shouldn't be understandable.
"Is it because he's ashamed of his body being different?"
Katherine started to develop theories in her head, looking for ways to explain Alex's behavior.
"If he's just a normal boy... Would he still act like this?"
After thinking for a bit, an idea suddenly appeared in her head as she thought back to the amount of time Alex kept staring at her body.
"He's your son, you idiot... He's probably curious about the differences between our bodies.
Maybe it's time for me to give them a talk... All three of them are almost at the age already."
With the thoughts in her mind, Katherine eventually fell asleep, unable to decide when to do it in the end.
---
As Alex woke up early in the morning, he could feel someone wrapping their arms and legs around him.
But more importantly, his leg cramp was finally gone.
"How do women endure this every month?"
Alex thought to himself as he shook Katherine's shoulder to wake her up, finding it a little hard to breathe inside her chest.
"Hm?"
"Mom, can you move your arm a little?"
"Nope, you're sleeping on the bed longer with me...."
Seeing Katherine refuse to let go, Alex didn't bother asking again; he simply moved up a little to breathe again.
Feeling the soft, smooth skin from touching his, Alex soon fell back asleep inside her warm embrace.
But now, Katherine was the one unable to fall asleep again as she felt something hard poking her thighs.
"It's just his morning wood. Just ignore it..."
Just as Katherine was about to get over it, Alex suddenly leaned forward, trying to sandwich the pointy thing in between her thighs.
"Alex?"
Katherine gently whispered, but she quickly realized Alex had fallen asleep already.
With no other way to move without waking him up, Katherine tried to move back a little but accidentally bumped into Mary.
"Whatever... It'll just go away on its own."
After ignoring it for a bit, Katherine's body eventually got used to it and soon fell back asleep.
A few hours later...
Katherine was the first one to wake up, just as the clock hanging on the wall was one hour off from noon.
Despite her attempt to not wake any of them up yet, Alex was awakened by the bed shake.
As he opened his eyes, he was a little stunned by what he saw.
Katherine was standing with only black panties in front of a full-body mirror, thinking of what to wear.
He knew she never wore bras to sleep, as they had recently taken a lot of showers together and dressed together afterward.
But seeing her in secret was making it more exciting than usual, despite having already seen each other's naked bodies for the thousandth time.
"I should probably wear the school uniform again... When did my bra become so tight?"
Katherine murmured to herself as Alex watched the mirror's reflection, showing the bra tightly squeezing her breast a little before clipping on.
Next, she put on a knee skirt before grabbing something from the drawer that stunned Alex.
It was a pair of stockings.
"Stocking exists in this world!"
Alex's head started to run wild before calming back down as Katherine suddenly started taking them off.
"I can't wear this... I'm too old for this." Katherine murmured as she put the stocking back inside the drawer.
"You're not too old!" Alex yelled inside his head as he continued to peep through the blanket, with eyes barely opened.
With the stocking gone, Katherine also removed the knee skirt before changing into a long black skirt that covered all the way to her ankles.
As she left the room and closed the door, Alex finally opened his eyes fully and thought back to what he had just seen.
"That school uniform! It's so cute——"
"Brother... Why are you staring at Mom like that?"
Alex was snapped out of his thoughts as he turned his head to the side, seeing Mary with her eyes wide open, staring at him.
"I was just curious about what school uniform we're going to wear. Ahem, I'm going back to sleep."
Alex quickly pulled the blanket back up, covering himself from his embarrassed face away from Mary.
"Why am I like this? Is it because of my body's hormones? Why am I getting turned on looking at mom?"
Alex tried to make excuses for himself, but he started feeling even more guilty as a small tent formed inside his pants.