Most plausibly: of a very long fanfiction featuring Tanya and Olga, where the author reminds readers "As long as under 100" – meaning a word count limit per chapter (e.g., under 100 words? That’s extremely short – perhaps 100 lines or 100 KB).
True friendship isn't measured by external metrics but by mutual support. Girlx Tanya 157 And Olga -As Long As Under 100 ...
Olga looked up from her book and smiled. "Not much, Tany! Just catching up on some reading. What about you?" Most plausibly: of a very long fanfiction featuring