The central protagonist, a dedicated and austere professor who strictly adheres to Swami Vivekananda's philosophy and the principle of 'Duty First'. He lives as a bachelor to focus on teaching but faces profound internal conflict when he falls in love with a student, disrupting his orderly existence.
A secret romantic affair develops between the professor and his student.
Krishnan legally and emotionally adopts Ramu, treating him as a sibling.
Krishnan acts as the protective uncle responsible for Gomathi's upbringing and marriage.
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