Why did collecting "Bikkuriman Chocolate" stickers become a trend?

Why did collecting "Bikkuriman Chocolate" stickers become a trend?

Executive Summary (Key Points)

・A scarce reward design of "clear 'jackpots' = Head stickers" maximized the desire to collect and generated buzz.No. 1 in press release and news release distribution share | PR TIMES
・The combination of narrative (Devils vs. Angels) and media expansion (TV anime) created continuity in the world-building, linking expectations to the next release and the next episode.lotte.co.jplineup.toei-anim.co.jp
・A price affordable with pocket money and nationwide distribution supported a daily, participatory frenzy where kids thought, "I can buy more tomorrow" and "I can trade with friends."neage.jp
・Conformity, trading, and rumors spread across schoolyards, and through network externalities, it became a situation where "everyone is collecting them, so I will too."
・On the other hand, food waste and an over-emphasis on rare items became social issues, leading to corrections in mixing ratios and value disparities under the guidance of the Fair Trade Commission.ITmedia

1. Product Design: Scarcity Drives Desire

・Rare tier = Head stickers
　・In addition to regular Angels/Devils/Charms, the design included a small mix of "Head" stickers with glitter/holographic finishes. The existence of "big jackpots" kept the lottery-style anticipation alive.No. 1 in press release and news release distribution share | PR TIMES
・Hierarchical collection
　・By simultaneously satisfying two layers of motivation—"I want to collect them all (complete the set)" and "I only want to target the Heads"—it encouraged broad participation.
・Physical appeal
　・The prism/hologram luster, which was rare at the time, strongly emphasized a "sense of specialness" and the pleasure of ownership.No. 1 in press release and news release distribution share | PR TIMES

2. Narrative x Media: Continuity of the world-building creates "I'll buy the next one too"

・Serial nature of the story
　・The "Devil vs. Angel" series, which began in 1985, featured a mechanism where the story progressed with each release. The text on the back of the stickers updated character relationships and settings, sparking anticipation for the next series.Wikipedialotte.co.jp
・Explosive awareness through TV anime adaptation
　・A total of 75 episodes were broadcast from 1987 to 1989. A "media cycle" was created: snack → anime → purchase again. lineup.toei-anim.co.jpWikipedia

3. Price and Distribution: "Accessible Play" that allows for daily participation

・Children's pocket money range
　・The low price of 30 yen at launch (later revised to 30 yen (later revised to 50 yen) enabled low price, which allowed for repeat purchases that could be made daily and simultaneous participation among friends. neage.jp
・Supply network available everywhere
　・Nationwide distribution from candy stores to mass retailers and chains. Localized sell-outs also amplified nationwide distribution. Localized sell-outs also amplified rumors of scarcity.

4. Social Dynamics: School culture as an "accelerator"

・Ecosystem of trading, boasting, and rumors
　・Trading sessionsemerged naturally in schoolyards and classrooms. Urban legendssuch as 'the rare one is in the Nth position in the box' also spread, reinforcing exploratory behavior.
・Peer pressure in the community
　・The fact that 'everyone has one' became social proofitself, leading to self-reinforcing collection.
・Explosive sales
　・During the boom, it was reported that sales expanded to a scale of hundreds of millions per year, and shortages and bulk buyingalso became hot topics. ITmedia

5. Backlash and institutional response: The 'distortions' of the boom and their correction

・Food waste issue
　・The act of taking out only the sticker and throwing away the snackbecame a social problem. The manufacturer, Lotte, stepped in with awareness campaigns such as the **'Bikkuriman Charter'** to encourage eating the whole snack and proper trading. No. 1 in press release and news release distribution share | PR TIMES
・Guidance from the Japan Fair Trade Commission (1988)
　・Standardization of inclusion rates, correction of price differences, and suppression of excessive valuation of specific stickers were required, and the extreme rarity of rare stickers was mitigated. This was one of the factors that led to the cooling of the boom. ITmedia

6. Chronological reference

・1977: Bikkuriman Chocolate released (30 yen).neage.jp
・1985: Devil vs. Angel series begins, leading to an explosive trend.Wikipedia
・1987–1989: TV anime broadcast (ABC/TV Asahi network, 75 episodes total).lineup.toei-anim.co.jp
・1988: Fair Trade Commission guidance leads to correction of inclusion rates and value disparities.ITmedia
・1991–: Base price becomes 50 yen (subsequent gradual revisions).neage.jp

7. Reading the "Trend Mechanism" through Behavioral Economics

・Scarcity bias: The harder an item (head sticker) is to obtain, the more attractive it appears.No. 1 Press Release and News Release Distribution Share | PR TIMES
・Variable ratio reinforcement: Uncertain "wins" encourage continuous purchasing.
・Social proof x Network externalities: Possessing and trading become status symbols among peers, and the value amplifies as more participants join.
・Temporal discounting of stories: The prospect of resolutions or new characters appearing in the next release or episode becomes a motivation to "buy now".lotte.co.jp

Mini Glossary

・Devil vs. Angel Series: The flagship series that began in 1985. A long-running project with a total of over 1,400 types. Wikipedia
・Head stickers: The "hits" of each series. Prism/Holo finishes were used to differentiate them, and they were included in very small numbers. No. 1 in press release and news release distribution share | PR TIMES
・Bikkuriman Charter: A code of conduct aimed at reducing food waste and preventing resale. A modern version of the initiative was also announced in 2021. No. 1 in press release and news release distribution share | PR TIMES

Summary

・Rare rewards (heads) × serialized world-building (Devil vs. Angel) × affordable prices and daily availability resonated with the trading culture of children and created a massive wave.
・On the other hand, the focus on rarity and food waste became a problem, and the craze subsided following corrective measures by the Fair Trade Commission. This is a classic example showing that **"design shapes behavior."** ITmediaNo. 1 in press release and news release distribution share | PR TIMES