"CoroCoro Comic Laboratory" Survey on Elementary School Students' Bags and Stationery: 44.8% Feel Randoseru are "Heavy," Over 60% Take Tablets Home.
Shogakukan's new project 'CoroCoro Comic Laboratory' surveyed 725 elementary school boys. It revealed that 44.8% feel their randoseru is heavy, with over 60% bringing tablets home, highlighting the social issue of increasing physical burdens on children.
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- 📰 Published: April 23, 2026 at 20:00
- 🔍 Collected: April 23, 2026 at 11:31
- 🤖 AI Analyzed: April 23, 2026 at 13:33 (2h 2m after Collected)
[CoroCoro Comic Laboratory] http://corocorolab.com/
Shogakukan Inc. has launched a new project, "CoroCoro Comic Laboratory," to regularly report and analyze the realities of elementary school boys based on reader survey data collected since the first publication of the boys' manga magazine "Monthly CoroCoro Comic" (hereinafter "CoroCoro Comic") in 1977. Through this project, we will propose and implement various fun and new initiatives that trigger "CoroCoro-style chemical reactions" while involving our elementary school boy readers.
CoroCoro Comic recently conducted a questionnaire survey regarding "randoseru" (school backpacks) and "stationery" among 725 CoroCoro Comic readers from 1st to 6th grade. The results of the survey—covering intentions to replace randoseru, whether they feel heavy, criteria for choosing stationery, and trendy items—are introduced along with an analysis by Koichi Kobayashi, Director of the CoroCoro Comic Laboratory.
~ "CoroCoro Comic Laboratory" Survey Topics ~
- Randoseru usage rate is strong at 94.6%. Meanwhile, the top reason for wanting a replacement is "Want something lighter" (33.3%).
- 44.8% feel that a randoseru filled with belongings is "heavy."
- Over 60% of elementary students take tablets home, combining "every day" (31.9%) and "depending on the day of the week" (29.4%).
- 71.8% of elementary students use tablets for homework and studying. Also used for managing contact books and schedules, and programming learning.
- The number one deciding factor when buying stationery is "Won't get scolded at school" (41.5%). Prioritizing school rules over favorite designs.
- The most popular stationery by far is "Matomaru-kun". Other answers included "Mt. Fuji Eraser" and "Homework Motivation Pen."
Background
With the distribution of tablet devices due to the GIGA School Initiative and the carrying of large-capacity water bottles, the belongings of Reiwa-era elementary school students are increasing year by year. As a result, the physical burden during commuting has become a social issue, even giving rise to the term "Randoseru Syndrome," and institutional reviews are underway, such as local governments distributing lightweight backpacks free of charge and recommending "okiben" (leaving textbooks at school).
Meanwhile, in the stationery market, stationery is evolving from "tools for writing and erasing" into "tools to express individuality and optimize the learning environment." This is driven by the spread of genderless stationery choices, the rise of "inclusive stationery" that caters to specific needs, and the hit of "space-saving" stationery accompanying the establishment of living room studying.
Given this background, the CoroCoro Comic Laboratory conducted this survey on randoseru and stationery among 725 CoroCoro Comic readers in the 1st to 6th grades.
Randoseru usage rate is 94.6%, showing persistent support. The top reason for wanting a replacement is "Want something lighter" (33.3%).
First, when asked, "What is the main bag you use when commuting to school?", 94.6% answered "Randoseru," significantly surpassing "Backpack" (4.4%). This suggests the persistent popularity of randoseru.
Next, when those who answered "Randoseru" were asked, "Do you want to replace your randoseru?", the vast majority (91.4%) answered "No," while 8.6% answered "Yes," indicating that a certain number of elementary students want to replace their randoseru.
The top reason for wanting to replace a randoseru was "Because I want something lighter" (33.3%), followed by "Because I want to change to a new color" (21.7%) and "Because I have a lot of belongings and want a bigger one" (17.4%). Because it is carried every day, it seems that not a few children desire a lighter randoseru.
As for the reasons for not wanting to replace their randoseru, "I like it, so I don't want to change it" (61.2%) took first place, followed by "No particular preference" (26.1%) and "It is expensive, so I don't want to change it" (8.5%). Many children seem to want to maintain the status quo out of attachment to their current randoseru.
44.8% feel that a randoseru filled with belongings is "heavy."
When asked, "How do you feel about the 'weight' when carrying a randoseru filled with belongings?", the most common answer was "Normal/Doesn't bother me" at 44.0%. On the other hand, 37.8% answered "Heavy, but I can bear it" and 7.0% answered "Painfully heavy," showing that a total of 44.8% of elementary students feel the weight. While many children think their current randoseru is fine out of attachment from daily use or lack of preference, there certainly seems to be underlying dissatisfaction with the weight.
Over 60% of elementary students take tablets home, combining "every day" (31.9%) and "depending on the day of the week" (29.4%).
Tablet...
Shogakukan Inc. has launched a new project, "CoroCoro Comic Laboratory," to regularly report and analyze the realities of elementary school boys based on reader survey data collected since the first publication of the boys' manga magazine "Monthly CoroCoro Comic" (hereinafter "CoroCoro Comic") in 1977. Through this project, we will propose and implement various fun and new initiatives that trigger "CoroCoro-style chemical reactions" while involving our elementary school boy readers.
CoroCoro Comic recently conducted a questionnaire survey regarding "randoseru" (school backpacks) and "stationery" among 725 CoroCoro Comic readers from 1st to 6th grade. The results of the survey—covering intentions to replace randoseru, whether they feel heavy, criteria for choosing stationery, and trendy items—are introduced along with an analysis by Koichi Kobayashi, Director of the CoroCoro Comic Laboratory.
~ "CoroCoro Comic Laboratory" Survey Topics ~
- Randoseru usage rate is strong at 94.6%. Meanwhile, the top reason for wanting a replacement is "Want something lighter" (33.3%).
- 44.8% feel that a randoseru filled with belongings is "heavy."
- Over 60% of elementary students take tablets home, combining "every day" (31.9%) and "depending on the day of the week" (29.4%).
- 71.8% of elementary students use tablets for homework and studying. Also used for managing contact books and schedules, and programming learning.
- The number one deciding factor when buying stationery is "Won't get scolded at school" (41.5%). Prioritizing school rules over favorite designs.
- The most popular stationery by far is "Matomaru-kun". Other answers included "Mt. Fuji Eraser" and "Homework Motivation Pen."
Background
With the distribution of tablet devices due to the GIGA School Initiative and the carrying of large-capacity water bottles, the belongings of Reiwa-era elementary school students are increasing year by year. As a result, the physical burden during commuting has become a social issue, even giving rise to the term "Randoseru Syndrome," and institutional reviews are underway, such as local governments distributing lightweight backpacks free of charge and recommending "okiben" (leaving textbooks at school).
Meanwhile, in the stationery market, stationery is evolving from "tools for writing and erasing" into "tools to express individuality and optimize the learning environment." This is driven by the spread of genderless stationery choices, the rise of "inclusive stationery" that caters to specific needs, and the hit of "space-saving" stationery accompanying the establishment of living room studying.
Given this background, the CoroCoro Comic Laboratory conducted this survey on randoseru and stationery among 725 CoroCoro Comic readers in the 1st to 6th grades.
Randoseru usage rate is 94.6%, showing persistent support. The top reason for wanting a replacement is "Want something lighter" (33.3%).
First, when asked, "What is the main bag you use when commuting to school?", 94.6% answered "Randoseru," significantly surpassing "Backpack" (4.4%). This suggests the persistent popularity of randoseru.
Next, when those who answered "Randoseru" were asked, "Do you want to replace your randoseru?", the vast majority (91.4%) answered "No," while 8.6% answered "Yes," indicating that a certain number of elementary students want to replace their randoseru.
The top reason for wanting to replace a randoseru was "Because I want something lighter" (33.3%), followed by "Because I want to change to a new color" (21.7%) and "Because I have a lot of belongings and want a bigger one" (17.4%). Because it is carried every day, it seems that not a few children desire a lighter randoseru.
As for the reasons for not wanting to replace their randoseru, "I like it, so I don't want to change it" (61.2%) took first place, followed by "No particular preference" (26.1%) and "It is expensive, so I don't want to change it" (8.5%). Many children seem to want to maintain the status quo out of attachment to their current randoseru.
44.8% feel that a randoseru filled with belongings is "heavy."
When asked, "How do you feel about the 'weight' when carrying a randoseru filled with belongings?", the most common answer was "Normal/Doesn't bother me" at 44.0%. On the other hand, 37.8% answered "Heavy, but I can bear it" and 7.0% answered "Painfully heavy," showing that a total of 44.8% of elementary students feel the weight. While many children think their current randoseru is fine out of attachment from daily use or lack of preference, there certainly seems to be underlying dissatisfaction with the weight.
Over 60% of elementary students take tablets home, combining "every day" (31.9%) and "depending on the day of the week" (29.4%).
Tablet...