Q1: Does fountain pen ink bleed through the 52 gsm Sanzen Tomoe River paper?
A1: True bleed-through is exceptionally rare with genuine Sanzen Tomoe River S paper, even when pairing wet, broad fountain pen nibs with heavily saturated dye or pigment inks. What you will see is optical show-through (ghosting), which is a normal consequence of using ultra-lightweight 52 gsm paper. You can easily counter this by matching your pen with finer nib grades (Extra Fine, Fine, or Japanese Medium) and standard-flow inks.
Q2: Should I buy the standard one-book Hobonichi Cousin or the Cousin Avec?
A2: Choose the standard full-year Cousin if the planner will remain stationary on an office desk as a single master reference for your entire calendar year. Choose the Cousin Avec if you carry the planner in a commuter bag daily or paste in photos, receipts, and ephemera. The Avec splits the year into two six-month books, cutting carried weight in half and allowing the spine to absorb physical expansion without splitting.
Q3: How do people deal with leaving daily pages blank?
A3: Blank daily pages are common, and attempting to fill every single day often leads to burnout. Experienced users treat unused daily spreads as spillover project workspaces, brain dumps, swatch test sheets, long-form meeting registers, or monthly review pages. The continuous weekly layout reliably logs your time, which means blank daily pages don't leave gaps in your schedule.