If you cannot afford to buy, use your local digital library (many district libraries in Tamil Nadu offer free online borrowing via the "e-Granthalaya" app) or buy used physical copies and scan them for personal use.
Here are a few tips for reading Tamil story books in PDF format: Tamil Story Books For Adults Pdf
(Sandilyan) : A naval-based historical romance set during the Chola era. Yavana Rani If you cannot afford to buy, use your
If you're new to Tamil literature or looking for recommendations, here are a few titles and authors to get you started: If you cannot afford to buy
: An open-source initiative providing free electronic versions of ancient Tamil literary classics and modern works.
: While often requiring a subscription, Scribd hosts many user-uploaded Tamil adult story collections and romantic novels. Essential Authors and Recommendations