Fukugyo Compass: Under ¥10K/Month for 8 Months, Then ¥4.84M in Month 25 — Inside Kunitomi's 200-Hour-a-Month Side-Hustle Blog

For the first eight months, the blog earned less than ¥10,000 a month. By month 25 it was making ¥4.84 million a month, and at its peak, ¥12 million. That is the monthly trajectory of “Fukugyo Compass” (Side Hustle Compass), the blog run by Kunitomi. He disclosed these figures in an interview with hosting company ColorfulBox, and Xserver’s official blog (February 2025) likewise profiles him as someone who “earns up to ¥12M in a month” and calls him “the salaryman making ¥5M a month on the side.”

What makes the numbers notable is that they do not belong to a full-time blogger. Kunitomi graduated from Rikkyo University, joined Sumitomo Mitsui Trust Bank as a new graduate, then moved to a web marketing company where he serves as an editor-in-chief, a salaried employee (26 years old with a main-job salary of just over ¥6M at the time of the Xserver interview). The blog runs entirely outside his day job. What it consumes instead is roughly 200 hours a month, an extraordinary amount for a side project.

The published monthly progression

According to the ColorfulBox interview, revenue ramped as follows:

• Months 1–8: ¥0–9K/month
• Month 9: ¥30K
• Month 10: ¥70K
• Month 20: ¥780K
• Month 21: ¥1.48M
• Month 25: ¥4.84M
• Peak: ¥12M (crossed ¥10M twice)
• Recent: ¥3–5M/month

Graphed, it is the classic “long silence, then a steep curve.” Nearly zero for eight months. Finally ¥30K in month 9. This is where most side-hustle blogs quit. In our archive, the monthly data of Tsuzuki Blog shows the same no-revenue stretch before jumping from ¥42K to ¥1M a month. Blog revenue moves exponentially, not linearly, a pattern observed repeatedly across genres.

Looking closer, the growth is not uniform. The milestones are “doubling months.” From ¥30K in month 9 to ¥70K in month 10 (~2.3x), from ¥780K in month 20 to ¥1.48M in month 21 (~1.9x), then ¥4.84M in month 25. Search-ranking gains hit the accumulated article base all at once, so revenue jumps in stair-steps. Conversely, agonizing over month-on-month changes tells you little about where you are on this curve.

The hours are the outlier

The value of this case is that the input behind that curve is stated concretely. Weekdays: 3–5 hours secured. Weekends: around 12 hours. Targets of 50 hours a week and 200 hours a month. Each article takes 20–30 hours to produce, published at a pace of one every five days. Not mass production, concentrated effort on a small number of articles.

Two hundred hours a month exceeds Japan’s standard working hours (around 160 hours a month). It is called a “side job,” but in practice it is closer to a second full-time job running parallel to the first. Side-blog success stories are often summarized as “done in spare moments”. This case’s numbers show the opposite.

The 20–30 hours per article, one-per-five-days cadence also runs counter to the common “publish daily” advice. Daily publishing caps effort at a few hours per piece. Kunitomi’s model limits output to roughly six articles a month and builds each one to a level that can win in search. It reads like the choice of someone who manages content quality professionally as an editor-in-chief applying the same standard to his own blog.

The other foundation is synergy with the day job. His main work is editor-in-chief at a web marketing company, so SEO and content production skills transfer directly. In the Xserver interview he recommends “side jobs that leverage your main job’s experience,” and the blog’s very topic, how to start a side hustle, creates a recursive structure where his own practice becomes his content. His X (Twitter) following reached 55,000, giving him two pillars: search and social.

The salary inversion is also worth recording. His main-job salary was just over ¥6M a year at the time of the Xserver interview. The ¥12M peak month means the blog earned twice his annual salary in a single month, and even the recent ¥3–5M months are several times his monthly pay. That he remains an employee anyway suggests a path different from the simple formula of “quit once side income beats the salary.”

Five failures before the blog

Easily overlooked, but the ColorfulBox interview also records what didn’t work. Before the blog, Kunitomi tried cryptocurrency, mutual funds, crowdsourcing, freelance web writing, and programming. The motivation was financial anxiety, but none of them stuck. The blog was attempt number six after five failures, not a story of spotting the winning path from the start.

Nor has revenue held its peak. Against the ¥12M high (¥10M+ twice), the recent level is ¥3–5M a month, less than half of peak. Affiliate revenue is exposed to search algorithms and advertisers’ payout revisions. As in the roundtable where three top bloggers with ¥10M+ peak months admitted “80% of our articles declined”, peak numbers and sustainable numbers must be read separately.

What transfers, and what doesn’t

Two things generalize from this case: (1) a no-revenue period is structural in blog economics, eight months under ¥10K is not a failure signal. And (2) there is a documented example of the few-articles-high-effort approach (20–30 hours per piece) reaching millions of yen per month within two years. Including Suntozo’s case of ¥100M cumulative across multiple sites, side blogs above ¥1M a month share a conspicuous trait: hands-on professional experience in web work.

The walls to replication also show up in the numbers. Two hundred hours a month is physically impossible under many family or work circumstances, and the skill-transfer premise, a day job in web marketing, does not apply to everyone. The topic choice of “how to start a side hustle” worked precisely because he was getting results at that moment. Latecomers have no guaranteed seat. Finally, both interviews were conducted by hosting companies in the context of their own services, and the figures are self-reported and externally unverifiable. That two outlets carry the same level of numbers works as a cross-check, but we record the limitation along with it.