
Plenty of Time to Study is the thirteenth chapter of the Assassination Classroom manga, gathered in Volume 2. Nineteen pages long and first published in 2012, the installment sets Class 3-E and Korosensei against a study-focused stretch of their school year.
Rendered in Japanese as くるくるの時間 (Kurukuru no Jikan), this nineteen-page chapter appears in the second collected volume, subtitled Time for Grown Ups. It centers on the students of Class 3-E and their unusual homeroom teacher Korosensei, with the supervisor Tadaomi Karasuma present and a newspaper carrying word of principal Gakuhō Asano.
The order of appearance begins with Gakuhō Asano seen in a newspaper, then Tadaomi Karasuma and Korosensei, followed by Nagisa Shiota and much of Class 3-E, among them Hiroto Maehara, Kaede Kayano, and Rio Nakamura. Yuma Isogai, Sōsuke Sugaya, and Kōtarō Takebayashi feature within an imagined sequence rather than the present. Irina Jelavić and the balance of the class round out the roster.
First published on October 1, 2012 in issue 44 of that year, the nineteen-page chapter sits in Volume 2. It follows Chapter 12, Time to See the Principal, and leads into Chapter 14, It's Time for a Test. The chapter also received a VOMIC voice-comic treatment, aired as weekly segments of the Japanese variety program Sakiyomi Jan Bang! in June 2013 and posted online that July through Shueisha's VOMIC website.

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Chapter 13, titled Plenty of Time to Study, centers on the students of Class 3-E and Korosensei during a study focused stretch of their school year, with supervisor Tadaomi Karasuma present.
Chapter 13, Plenty of Time to Study, was first published on October 1, 2012 in issue 44 of that year, and it is collected in Volume 2, subtitled Time for Grown Ups.
Chapter 13 of Assassination Classroom is titled Kurukuru no Jikan in Japanese, written as くるくるの時間, translated as Plenty of Time to Study.
Chapter 13, Plenty of Time to Study, received a VOMIC voice comic treatment, which aired as weekly segments of the Japanese variety program Sakiyomi Jan Bang in June 2013 and was posted online that July through Shueisha's VOMIC website.
Chapter 13, Plenty of Time to Study, follows Chapter 12, Time to See the Principal, and leads into Chapter 14, It's Time for a Test.
Looking for more on Chapter 13: Plenty of Time to Study? The Dragon Ball Wiki on Fandom has a dedicated page with community notes.
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