Manga Quest Mathematics: Math Adventures with Integers, Ratios, and More!

An exciting full-color manga where mystery meets mathematics! Join a young detective and a set of adventurers as they crack codes, chase thieves, and solve real math challenges using logic and bravery.

Join master detective Rock Yodogawa, his fearless partner June, and their companions—Liu, Mutsuki, and eccentric Professor Hex—in two back-to-back manga adventures bursting with mystery, danger, and brain-teasing challenges. From chasing the elusive Phantom Thief Kubrick to navigating the perilous Serpent River and breaking ancient curses, every twist demands sharp thinking and essential math skills. Filled with humor, logic, and a sense of inquiry, Math Adventures for Grades 6–7 combines exciting storytelling with educational learning. Readers will gain math confidence and have fun doing it—because in this world, math isn’t just a subject, it’s the secret to every mystery!

Translation provided by Tokyo Otaku Mode (TOM) and David Bove.

Standard and Primary covers are widely available through general retailers. They often have higher print runs and can be cheaper, especially during sales.

In contrast, Direct Market (DM) and variant covers are primarily sold in comic shops. DM editions tend to have more limited availability and may be more valuable to collectors.

The main differences lie in artwork style, availability, price, and collector appeal. Ultimately, the choice between standard and variant covers depends on personal preference, budget, and individual collecting goals.

Comic book enthusiasts have various formats to choose from when collecting their favorite stories.
Here's a brief overview of the main types:

Omnibus

• Large, hardcover collections
• Usually contain complete runs or extensive story arcs
• Typically 800-1000+ pages
• Higher price point, often €100-€150

Oversized Hardcover (OHC)

• Similar dimensions to omnibus, but thinner
• Collect shorter runs or story arcs
• Usually 300-600 pages
• Priced between €30-€50

Hardcover (HC)

• Standard-sized hardcover books
• Collect 6-12 issues typically
• Similar dimensions to single issues, but with a hard cover
• Priced around €25-€35

Trade Paperback (TP)

• Softcover collections
• Standard comic book size
• Usually collect 4-6 issues
• Most affordable option, typically €15-€25

Other Formats

• Absolute Editions: Oversized, deluxe hardcovers (mainly DC Comics)
• Compendiums: Massive paperback collections
• Graphic Novels (OGN/GN): Original stories not previously released as single issues

The choice between these formats often depends on personal preference, budget, and collecting goals. Omnibus and OHC editions offer larger artwork and more content but at a higher price, while TPs provide a more affordable way to collect complete story arcs