Comparing these two 2026 planners? Start with what they share: both Jibun Techo Standard and Hobonichi Cousin have vertical, 24-hour weekly schedules. The real choice is whether you also want a full page for every day, which extras you will use, and how wide a book you want to carry.
This guide compares Kokuyo Jibun Techo Standard DIARY in A5 Slim with the 2026 Hobonichi Techo Cousin in A5. Check the exact edition and format on any retailer listing before buying; the product links above may show different editions or bundles.
The weekly view: both can track a full day
Kokuyo’s official Jibun Techo Standard DIARY guide describes a 24-hour vertical weekly layout, plus monthly blocks. Each day has a vertical timeline for recording plans and activities, including early mornings and late nights. It is not a diagonal layout.
Hobonichi’s official 2026 Cousin guide also describes vertical 24-hour weekly pages. Its printed hourly scale runs from 5 a.m. to 4 a.m. the next day. It is not merely an untimed appointment grid.
If time blocking is your main concern, either planner supports it. The meaningful difference comes when you turn to the rest of the book.
Side-by-side: the editions being compared
| Feature | Jibun Techo Standard DIARY, A5 Slim | 2026 Hobonichi Cousin, A5 |
|---|---|---|
| Covered book size | 217 × 136 mm | 148 × 210 mm |
| Weekly layout | Vertical, 24-hour timeline | Vertical, 24-hour timeline (5 a.m.–4 a.m.) |
| Full daily page | No separate page-a-day section in the DIARY | Yes, one page per day |
| Other planning space | Monthly calendar and planning/list sections; optional LIFE and IDEA booklets vary by bundle | Monthly calendar, yearly index and additional pages |
| Paper | Kokuyo THIN PAPER | Tomoe River paper |
Sizing detail: Kokuyo lists the covered A5 Slim Standard DIARY at 217 × 136 mm; its coverless refill is 210 × 130 mm. Hobonichi lists the Cousin at 148 × 210 mm. These are not interchangeable versions of the same A5 footprint. Confirm whether you are buying a covered DIARY, refill, or First Kit.
Sources: Kokuyo Standard DIARY specifications, Kokuyo Standard 2026 lineup, and Hobonichi Cousin 2026 specifications.
Paper and the pages beyond your schedule
Kokuyo specifies its own thin, lightweight THIN PAPER for the Standard DIARY. Hobonichi specifies Tomoe River paper for the Cousin. Both makers describe their paper as thin; pen and ink preferences are personal, so try a sample if bleed-through or drying time is important to you. Neither paper alone makes a universal winner.
The Jibun Standard DIARY emphasizes a weekly time record alongside monthly and other planning sections. The LIFE and IDEA books add long-term records and free-form notes, but they are separate booklets: the First Kit includes them, while a DIARY-only purchase does not. Verify the bundle before paying. See Kokuyo’s lineup for the distinction.
The Cousin combines that full-week overview with a page for each day in the main book. That gives you room for appointments in the weekly spread and extended notes or journal entries on daily pages without adding a second booklet. Hobonichi documents both sections in its 2026 Cousin guide.
Which format fits your routine?
- Consider Jibun Techo Standard DIARY if your week-by-week time record is the center of your system, you prefer its narrower A5 Slim footprint, and you do not need a full daily page in the same book. If you want the separate LIFE and IDEA booklets, check that the listing is for the First Kit.
- Consider Hobonichi Cousin if you want the same kind of vertical weekly time planning and a dedicated daily page for detailed notes, work logs, or journaling. Its wider A5 format gives those pages more room.
There is no weekly-planning-versus-daily-journaling divide here: both support weekly scheduling, while the Cousin additionally provides one full page per day. Your decision depends on how much daily writing space you will actually use.
If you would rather compare planners in person, see our Itoya Ginza field guide. For a separate edition, see our Hobonichi 2027 buying guide.