"..." Wang Ce Lou picked up the menstrual underwear with his pen, intending to throw it directly into the trash can, but he suppressed the thought as soon as it arose.

Wang Celou: No, we need to use this every month. If I throw it away, what will Mei Si wear next time?

Wang Celou put the menstrual underwear back on the table.

Wang Celou couldn't help but glance at the menstrual panties a few times. Remembering what Mei Si said about them being inconvenient, Wang Celou suddenly had a picture in his mind of using the menstrual panties.

"Slap!" Wang Celou slapped himself across the face.

"Wang Celou! What are you thinking about? How could you think about such things?!" Wang Celou covered his face in pain, unable to believe that he had such a fetish.

Wang Ce Lou went straight to bed, lay down, closed his eyes, and tried to sleep. However, the more he tried to sleep, the less he could.

Wang Celou started thinking of ways to improve menstrual underwear/shorts to make them more convenient...

"Just this once, I'll never help her again!" Wang Celou simply got up, turned on the light, grabbed a sheet of white paper from the table, and started drawing.

The next morning, Wang Ce Lou went directly to knock on Mei Si's door.

"You're up really early," Mei Si said, looking at Wang Ce Lou outside the door.

“…Your things.” Wang Ce Lou took out menstrual underwear from behind his back, pinched a strap between his thumb and forefinger, and held it up to Mei Si.

"Oh dear, I almost forgot, if this comes..." Mei Si took the menstrual panties/underwear, went inside, and stuffed them into her schoolbag.

"...The reason that thing is different from regular underwear is probably because the elastic band of regular underwear is of poor quality. I've thought of a solution. When you come back next week, I'll give you the materials, and you can sew one yourself," Wang Celou said expressionlessly.

"You've got a plan! You're so smart! Hey? What happened to your ear? Why is it so red?" Mei Si leaned closer to Wang Ce Lou, wanting to take a closer look at what was wrong with his ear.