Another name for high school concentration.

Refers to those nicknames that clearly show their love and persistence in the secondary culture.

The following are some nicknames with high concentration: the names of anime characters, using the names of their favorite anime characters as nicknames, such as Luffy, Conan, Naruto and so on. Secondary terms: use terms or stalks in secondary culture as nicknames, such as secondary disease, lolicon, and double cultivation of house rot.

Cute words: use cute words as nicknames, such as big, cat, bunny, etc. Secondary works related: use the names of your favorite secondary works or related elements as nicknames, such as sword circle, witch circle and so on.