The javai may be an outsider (different caste, economic status, or personality) — sasu disapproves.
The "Sasu Javai" trope is a hit in Marathi TV serials and short stories because it balances high drama with "Gul-God" (sweet) moments. Common themes include:
Portraying the two as confidants who team up to solve household problems or help the daughter/wife achieve her dreams.