Here’s a blog post looking into the popular Sinhalese novel by Sujeewa Prasanna Arachchi.
Kaluwara Ai Wijithayama (කළුවර ඇය විජිතයම) Author: Sujeewa Prasanna Arachchi (සුජීව ප්රසන්න ආරච්චි) Kaluwara Ai Wijithayama Mage Pdf
It appears the phrase might be a misspelling, a very rare or unpublished local document, or a misremembered title of a Sinhala song, poem, or literary piece. Common Sinhala words like kaluwara (black/dark), ai (interjection), wijithayama (actually/indeed), and mage (my) suggest it could be a lyric or verse line, but no standard published PDF under that name exists in public or academic databases I can access. Kaluwara Ai Wijithayama Mage Here’s a blog post