Super Popular VTuber Sakura Miko from Hololive Collaborates with Gakken for a Reference Book Series! Limited First-Edition Sets with Bonuses Available for Pre-order on May 8.

※As of May 7, 2026

Gakken Co., Ltd. (Tokyo, Shinagawa / Representative Director and President: Tatsuya Nanjo), a group company of Gakken Holdings Co., Ltd. (Tokyo, Shinagawa / Representative Director and President: Hiroaki Miyahara), began pre-orders on May 8, 2026, for "Junior High English Vocabulary Even Sakura Miko Can Understand," "Junior High Mathematics Even Sakura Miko Can Understand," "Junior High Kanji + Vocabulary Even Sakura Miko Can Understand," and "Junior High Geography + Prefectures Even Sakura Miko Can Understand" (all four titles scheduled for simultaneous release on August 6, 2026).

■A fun-filled study guide series designed for Sakura Miko, who struggles with studying, to improve her academic ability! Easily learn from elementary school review to junior high basic levels.

Sakura Miko has previously struggled greatly with elementary and junior high level academic tests during her live streams and other activities. However, without giving up, she has challenged herself to improve her academic ability, even studying with Gakken's original drills.

And so, this series was finally born, aiming to develop teaching materials that even Sakura Miko, who struggles too much with studying, can enjoy.

Since it allows for enjoyable learning from elementary school review levels to junior high basic foundations, it is perfect not only for junior high students who can't keep up with school lessons but also for adults who want to review what they learned in the past or general knowledge. In addition, the inner pages are filled with full-color newly drawn illustrations, abundant example sentences related to Sakura Miko, and fun interactions with 35P (Mikopi). It is a series full of entertainment that fans can enjoy while studying.

The cover illustration is newly drawn by illustrator Nana.

The inner pages include many newly drawn mini-character illustrations by illustrator Mochimiko.

Paper sample of "Junior High Kanji + Vocabulary" (left), Paper sample of "Junior High English Vocabulary" (right)

Paper sample of "Junior High Mathematics" (left), Paper sample of "Junior High Geography + Prefectures" (right)

■Introduction to the contents of "Junior High English Vocabulary Even Sakura Miko Can Understand"

"Junior High English Vocabulary Even Sakura Miko Can Understand" contains approximately 1,000 English words that junior high students should know. Tailored to Sakura Miko's level, who struggles so much with English that she stumbles even on how to read English words, this reference book is unusual for a junior high school textbook in that all English words and example sentences have katakana phonetic readings. Also, the English example sentences are familiar to fans, such as phrases related to game streaming and distribution activities, making them easier to remember. Furthermore, at the beginning of the book, you can learn related English words with full-color scene illustrations related to Sakura Miko, such as the Cyber Sakura Shrine, live stages, and streaming rooms. It also includes English words related to streaming and fan activities, making it a useful book for interacting with overseas fans.

Comes with an original notebook "Miko Study Notebook English."

Paper sample of "Junior High English Vocabulary"

Illustration sample appearing on the pages of "Junior High English Vocabulary"

■Introduction to the contents of "Junior High Mathematics Even Sakura Miko Can Understand"

Tailored to Sakura Miko's level, who struggles too much with mathematics, this book reviews from elementary school arithmetic levels. Elementary school learning content, such as fractions and ratio calculations, contains surprisingly important material, and if this is vague, junior high students will struggle with mathematics. This book, which allows for effortless review from elementary school, will be a helpful guide for junior high students who worry, "It's too late to ask the teacher now."

With fun interactions between Sakura Miko and 35P (Mikopi), you can learn easily through quiz-style problems.

Comes with an original notebook "Miko Study Notebook Mathematics."

Paper sample of "Junior High Mathematics"

■Introduction to the contents of "Junior High Kanji + Vocabulary Even Sakura Miko Can Understand"

All 700+ example sentences for kanji and four-character idioms are related to Sakura Miko, making it a reference book that fans can also enjoy as a reading material.

In the Kanji section, students will learn to read and write kanji based on themes such as VTuber activities, idol activities, Sakura Miko's daily life, listeners' daily lives, game streaming, and study streams. The kanji selected for study are carefully chosen from those frequently appearing in entrance exams, making them content that junior high students should actually remember.

Also, Sakura Miko has often made fans laugh with various misreadings, such as mistakenly reading "阿鼻叫喚" (abikyōkan - pandemonium) as "あえんびえん" (aenbien - a state of confusion). This book is rich in vocabulary learning, including four-character idioms and idiomatic phrases that are useful not only for junior high students but also in adult conversations. Through conversations between Sakura Miko and 35P (Mikopi), you can learn how to use vocabulary in a fun way.

Comes with an original notebook "Miko Study Notebook Japanese."

Paper sample of "Junior High Kanji + Vocabulary" (Kanji page)

Paper sample of "Junior High Kanji + Vocabulary" (Vocabulary page)

Paper sample of "Junior High Kanji + Vocabulary" (Quiz page)

■Introduction to the contents of "Junior High Geography + Prefectures Even Sakura Miko Can Understand"

Although learned in elementary school, adults often cannot answer accurately: Prefectures