The main storyline of the hit manga Dr. STONE has long captivated millions with its journey to rebuild human civilization from scratch using the power of science. Throughout the series, genius Senku and his team impress fans by successfully creating everything from antibiotics and mobile phones to space rockets using only the most basic resources of the Stone World.
However, a strange debate recently erupted on Japanese forums targeting a very specific biological detail. Why does the series never invent any women’s hygiene products?
A strange complaint: Great science or managing daily life?

The controversy began when a social media user sharply criticized the work for completely ignoring the menstrual cycles of its female characters. They argued that in a realistic survival story, if Senku’s group has enough time and materials to sew basic underwear, then the absence of sanitary pads is highly illogical.
Critics believe the protagonist should prioritize women’s intimate health before dreaming of grand technological advances.
Immediately, the Japanese fan community rose to defend the anime and manga with sharply sarcastic responses. Most readers agreed that Dr. STONE is fundamentally a shonen series aimed at delivering an imaginative adventure focused on large-scale projects.
Demanding an entertainment work to manage every daily physiological need blurs the line between fiction and reality and is an unreasonable expectation.
The author’s tricky dilemma

Besides explaining that many complex processes (like rocket assembly) are trimmed to maintain story pacing, Japanese netizens pointed out a major irony.
Many argued that if authors like Eiichiro Oda or Boichi dared to include a detailed scientific diagram of sanitary pad production, the work would instantly face harsh backlash. Publishers would likely be accused of unnecessarily sexualizing female characters in a magazine aimed at young boys.
In short, avoiding this sensitive topic is seen as a wise move that helps the author steer clear of pointless controversies. After all, any fictional story must sacrifice some real-life details to keep its audience engaged.