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Page 19 was another similar question, which Alex was able to complete after thirty minutes of solving it.

With only one page yet, Alex took a short water break as he turned over to see what part the other two girls were at.

To his surprise, the other two had just started page 17, and there was still a long way to go.

Shifting his attention back to the paper at hand, Alex completed it after another half an hour of work.

"Whew, there goes the math homework." Alex lets out a sigh of relief as he puts the stack of homework back into his backpack.

"Good job, Alex. Muah! You are the best son I ever had!" Katherine declared as she kissed him on the cheek.

"As if she has another son..." Sophia murmured as Katherine blushed a little in embarrassment.

"Mom, can I go back to my room to take a break?" Alex suddenly asked.

"Sure. Go for it... You two, get back to work. You are not eating lunch today until you finish your math homework."

Both girls let out a sigh as Alex ran out of Katherine\'s warm embrace into the hallway.

---

"Fuck, that was way too close..."

Alex\'s heart was beating faster than ever as he quickly closed his bedroom door before sitting down on the bed.

He could feel a tent that had formed below. It had been painfully up since Katherine hugged him.

Her sudden kiss on the cheek almost pushed him to the limit as he could feel his pants already leaking a little.

Despite his attempts to take a deep breath and open the window to calm himself down, nothing worked.

It just couldn\'t go away, as his brain kept flashing Katherine\'s warm body surrounding him every second.

Unable to resist the urge, he took off his pants and underwear before grabbing a piece of tissue.

Gently, he began stroking it a little, giving him a sense of relief temporarily.

But it was also causing him to want even more, which he did by rewarding himself with another stroke with his hand.

As he continued to stroke his erect cock with his left hand, he started moving his other hand further down.

The sensation almost made him reach orgasm on the spot from just gently rubbing onto the little bump underneath his testicle.

Remembering what Mom had taught him, Alex began to slowly insert a finger inside the entrance after feeling a little empty inside.

"Hm!"

Alex couldn\'t help but moan out an extremely feminine voice as the sensation was now doubled.

Just as he was about to climax, he suddenly could hear the door being unlocked.

Within seconds, he immediately lay down flat on the bed before grabbing his pants and pulling the blanket back up.

"Alex, you okay? What was that sound?"

Katherine revealed herself as she stepped inside the room, looking a little worried after seeing Alex\'s face turn red.

"I\'m fine. I\'m just taking my break since I\'m just a little sleepy after eating breakfast."

Alex replied as he slowly pulled his pants back up underneath the blanket, putting the issue into his pocket.

"Really? Are you sure?"

Katherine worryingly walked over to the bedside before putting her hand on his forehead to check his temperature.

"Yeah, I\'m sure. I just didn\'t sleep really well yesterday. Mom, you can go back and help Sophia and Mary."

"Okay then.. I\'ll wake you up when it\'s lunchtime."

As the door closed, Alex was now once again alone in his room. But this time, he headed over to lock the door.

"I really need to get in the habit of locking it," Alex murmured as he headed back to the bed.

Looking down, the excitement had long passed as the once visible tent was now just a small bump.

However, his head still wanted to do it, so he took off his pants again and laid flat on his bed.

This time, he began by gently rubbing his clitoris, causing his cock to slowly rise as his body started to be turned on again.

Slowly, he inserted his finger through the tiny entrance, bending it a little as it reached his sweet spot.

"Hm!"

The sensation from just a slight push was much more intense than he ever imagined.

It was like a wave of pleasure constantly hitting his head rather than having it all at once.

Feeling something was about to come out, he quickly took out his tissue to cover his cock.

Pressed onto his sweet spot over and over again and gently pinching his clitoris, he finally pushed himself over the edge.

Shots of white liquid flew right into the tissue in his hand as he ejaculated for the first time from just playing with his female genitals.

As Alex\'s heart rate slowly calmed back down, he suddenly started to feel a little guilty inside.

It was almost as if he had betrayed his wish to be a man. But he quickly dismissed the thoughts.

"I still like women... That will never change. I\'m a guy inside," Alex whispered to himself as he rolled the tissue into a paper ball.

After throwing it into a trash bin, Alex looked at himself in the mirror as he thought back to what he had just done.

"I\'m just using the body part given to satisfy myself... I\'ll never have a man near me."

After swearing it to himself, he soon realized something that made him feel even more guilty than earlier.

"Shit. Did I just use Mom as my fap material? What\'s wrong with me? She would be so disappointed in me."

Within seconds, Alex quickly slapped himself in the face several times before reflecting on his actions.

"No more. I need to control myself... Think of Luqing instead. Yeah, she\'s the perfect woman I want."

Alex soon came to a consensus inside his head, calibrating his brain\'s ideal woman to be Luqing instead.

At the same time, he couldn\'t help but notice how similar their bodies were, both mature and fully developed women.

"Whatever, at least that\'s better than thinking about Sophia and Mary... Shit, I need to change my underwear again."

After changing it, Alex fixed his clothes before heading back to the living room.

---

"Welcome back. You awake from your nap?"

Katherine stood behind the two girls, teaching them how to solve one of the problems on page 17.

"Yeah..."

After sitting down, Alex turned his attention to the second stack of homework.

As he read the first page, he was surprised to find it something similar to a periodic table, albeit with tons of gaps in between.

"Mom, what is this homework?" Alex asked curiously as he handed the paper to her.

"Oh, it\'s alchemy. Why did your teacher assign this so early... Alex, can you wait for a bit?

I need to finish teaching Sophia this question first. Then, I\'ll teach all three of you guys about this."

"Okay."

Alex waited as he watched Katherine patiently teach the same stuff that he already knew about.

"Brother, can you help me on this?" Mary asked, seeing Katherine was too busy helping Sophia.

"Sure."

As Alex looked at Mary\'s work, she was still working on the first problem on page 17.

"Okay, I\'m going to start from the beginning to make sure you understand it fully."

An hour later...

Sophia and Mary were sitting right before Alex, working on the last page of the math homework after Katherine made him explain to both of them.

Meanwhile, Katherine had just come back from the kitchen, carrying a tray full of food for the three of them.

"Nice, you two are almost finished. You all can take a break after this if you want."

After putting the food on the table, Katherine watched as the two girls put their pencils down as they finished the math homework.

Even though there was still one more stack of homework, both of the girl\'s faces were full of smiles.

It was almost as if they had overcome their biggest life challenge, happily grabbing the food before eating it.

"I\'m definitely taking a break after this. Writing so much today hurts my arms," Sophia complained, as she could feel her brain drained of energy.

"Mom, can you take us around the city?" Mary requested as she took a bite of the food.

"I\'m Sorry, Mommy has work later, okay? But I can ask Luqing later to bring you guys outside."

Mary looked a little disappointed, but she was still happy with the result.

"Mom, I want to finish all of the homework first. I thought you promised me you were going to explain this after they were done."

Alex argued as he began putting a piece of the food into his mouth.

"Well, Alex, I want to help you. But it seems like both of your sisters want a break."