Side income media from Japan.
Real numbers. Real failures. Real next steps.
You’re curious about side income. But polished success stories never quite answer: “Can I actually do this?” “What does it really earn?”
Kasegen is a Japanese side income media built on real experiences. Across 7 categories, we publish the actual numbers, honest failures, and concrete next steps from people who’ve actually done the work.
The raw reality you won’t find in textbooks — that’s what makes your own “next move” clear.
WordPress, SEO, and affiliate networks — monetization know-how grounded in real earnings.
Crowdsourcing platforms and rate negotiation from practitioners.
Real workflows from sourcing to listing and shipping, with actual profit margins.
NISA, iDeCo, US stocks, and crypto — including failure stories, not just wins.
Using ChatGPT, Claude, and image generators for contract work, automation, and content.
Building audiences on X, Instagram, TikTok, and YouTube, then monetizing them.
Cutting phone bills, insurance, subscriptions, and utilities — cash flow improvement that sticks.
“Kasegen” (カセゲン) comes from kasegu (稼ぐ), the Japanese word for “to earn.” Our goal is to meet readers at the moment they’re wondering how to make that first step — and give them something concrete to act on.
Articles are published in Japanese. Browse to explore.
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