
In the year 2080, Japan is a high-tech society filled with government-arranged marriages, advanced plastic surgery, and cutting-edge medical science. Everything looks familiar, yet society has changed in strange and unexpected ways. People live longer, look younger, and even love is decided by systems and science.
In the middle of this world lives Sanda Kazushige, a quiet and awkward middle-school student. Like many boys his age, Sanda is struggling through puberty, unsure of himself and his place in the world. But his life takes a wild turn when he gets caught up in a bizarre and life-threatening event triggered by his classmate Fuyumura.
During this crisis, something incredible happens—Sanda transforms into a large, muscular version of Santa Claus. It’s not a costume or a dream. It’s real. One moment he’s a shy, scrawny boy, and the next he’s a burly Santa with strength, speed, and holiday-themed powers. Suddenly, this middle schooler is no longer ordinary. He’s a symbol of cheer and justice—at least in a very strange way.
As Santa Sanda, he’s thrown into a series of chaotic adventures that involve saving classmates, battling mysterious threats, and uncovering dark secrets hidden within the school. Along the way, he begins to search for the truth behind the disappearance of a classmate named Ono, who was declared dead but may not be gone after all.

Sanda Plot
Sanda must juggle school life, a growing crush, his weird transformation, and questions about identity, maturity, and purpose. With each mission, he discovers more about the twisted world around him and the hidden forces shaping it. The deeper he goes, the more he realizes that nothing in his life—or in society—is quite what it seems.
“Sanda”, from the mind of manga creator Paru Itagaki (best known for BEASTARS), is a unique mix of sci-fi, mystery, comedy, and coming-of-age drama. It’s a story about growing up in a world that doesn’t always make sense, and how sometimes the person least likely to be a hero ends up becoming the most important one.
Sanda’s journey is hilarious, strange, and surprisingly touching. His Santa form may look ridiculous at times, but behind the red suit and muscles is a boy learning to stand up for what he believes in, even when the odds—and reality—are stacked against him.
In this future full of control and science, one middle schooler armed with holiday spirit might just be what the world needs. Because when chaos strikes in 2080, Santa Sanda delivers.

What is the release date for Sanda Chapter 121?
Sanda Chapter 121 will come out around July 9, 2025, for the following regions.
- Pacific Daylight Time [West Coast]: 8:00 AM PDT (July 9, 2025)
- Central Daylight Time [Central America and Canada]: 10:00 AM CDT (July 9, 2025)
- Eastern Daylight Time [East Coast]: 11:00 AM EDT (July 9, 2025)
- Greenwich Mediterranean Time [Britain]: 3:00 PM BST (July 9, 2025)
- Philippines Standard Time [Philippines]: 11:00 PM PST (July 9, 2025)
It will be available to read on July 10, 2025, for these regions.
- Korean Standard Time [Korea]: Midnight KST (July 10, 2025)
- Japanese Standard Time [Korea]: Midnight JST (July 10, 2025)
- Australia Eastern Daylight Time [Australia]: 02:00 AM AEDT (July 10, 2025)
Where to read Sanda Chapter 121?
Sanda Chapter 121 will be available to read on Book Walker.
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