Oshikatsu

Oshikatsu (推し活) is a general term for activities in which you spend time and money supporting your oshi (推し). The target can be an idol, an artist, an anime or game character, an athlete, and more. Buying merch, following streams and live shows, posting about them on social media: all of that counts.

It is close to English ideas like stan and fandom, but oshikatsu is usually framed in a positive light. How much you know, or how long you have been a fan, does not matter. There are no fixed rules. Setting your own pace is part of what makes it work.

For the word oshi itself, see the Oshi entry. The focus here is the support work that comes after you already have someone or something to cheer for.

Oshikatsu is generally read as a coinage that joins oshi with katsudo (活動, activity) and shortens the activity part to katsu (活). Digital Daijisen notes that katsu here is short for katsudo, and defines the word as a general term for activities that support a favorite entertainer, athlete, character, and so on ( Kotobank ). Who first used the phrase is unknown.

Japanese already shortens many activities into "-katsu" forms: shukatsu for job hunting, konkatsu for partner hunting, and so on. Oshikatsu spread as another word in that family. The lineage of "-katsu" words comes up in Hiroaki Iima's essay "The Birth and Development of '-Katsu'" on Chuokoron.jp, and in the July 2023 special feature of *Kokumin Seikatsu* from the National Consumer Affairs Center of Japan (国民生活センター).

In 2021, "oshikatsu" was nominee No. 07 for the 38th U-Can New Words and Buzzwords Awards run by Jiyu Kokumin Sha. It was not among the prize words or the top ten.

Oshikatsu as a "-katsu" coinage

Like shukatsu, konkatsu, and asakatsu, oshikatsu compresses "activities around X" into a "-katsu" form. Daijisen states that katsu is short for katsudo. Iima's account notes that not every "-katsu" word is a simple abbreviation. For oshikatsu, reading it as "oshi plus activity, shortened," in line with the dictionary, is the safest call.

How it differs from stan and fandom

In English, stan can mean a highly devoted fan, and sometimes carries a sense of obsession or aggression. Fandom points to the fan community itself. Oshikatsu names what an individual does for their oshi, with a positive, everyday tone. It puts more weight on how you support than on belonging to a group.

What people do for oshikatsu

Buying goods, watching lives and streams, posting on social media, celebrating birthdays and anniversaries, fan art and derivative works: the range is wide. Where the line sits varies by person. Concrete experiences you can try in Japan are covered in a separate article .

Nui-katsu and other derived "-katsu" words

One branch that grew from the same pattern is nui-katsu : activities centered on plush toys, such as collecting them or taking them out. People often describe it as a genre within oshikatsu. Having a particular oshi is not required. Time with a favorite plush still counts as nui-katsu. Other "-katsu" labels keep appearing by field, and whether an oshi is required depends on the word.

Relation to gachi-koi and riako

When feelings toward an oshi are described in romantic terms, words such as gachi-koi and riako may come up. Oshikatsu itself is a general term for support activities. Romantic feelings are not required. How those lines are drawn is left to their own entries.

Relation to niwaka and calling yourself an otaku

Oshikatsu does not ask how much you know or how long you have been a fan. "I like this" is enough to start. That low bar has made it welcoming for people who hesitated to call themselves otaku for fear of being labeled niwaka . Otaku stresses deep immersion in a genre. Oshikatsu focuses on the act of support. The easier self-label helped it spread as an entry point.