Yug's love for Mairi...she is L mom,he hates L but adores her mom maybe cause,same as Kairi,missed and needed his mother a lot and found that figure in Mairi.
For drama sake M won't wake up until she gets the blood. Finally time to reveal she is L mom-Indrani Jha,Y mother in law,he can't give her blood,nor the brothers-guess none got sick all this time to need blood and reveal the secret. And ths is how Kairi got to know another truth after L being the wife. Now will understand and treat Yug better cause his love for Mairi melts her.
K donates blood...would have been better if her bond with Mairi wasn't because blood calls. K wants to hide she gave blood,now that Yug was ready to thank the person who saved his Mairi.
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