Ah, I love this. This flows so well, you clearly have a way with words. While I was reading this, I was totally admiring your vocabulary and sentence structure. It's SO well written and I am glad you've started writing and hope to read more from you!
Coming to the story, how cute is this idea! I love every single detail you've put in, from the way Shravan's tiffin was placed on the seat to how they've moved into Suman's old house. Adding context to fluff like this is difficult sometimes but you've done such an outstanding job and it added SO much to the feel of the story.
The dialogues! The little nok-jhok was so perfectly apt and in character. I loved that Sumo stormed into his office - that's never going to change. He was sleeping, that just made me go "awww". And you brought the glasses back, I love it when the glasses come back and Sumo admires him in them, that's always been a head-cannon from day one!
"Chashmish" - so cute! Gah.
And that whole conversation about him being needy and Sumo blushing - this was perfect! I adored it so much.
I can so see this happening down the road, Shravan would SO try to seduce Sumo in his office and she would SO relent because they're both SO thirsty for each other.
And the last part - HOT! I love how everything was implied rather than explicit because you get that "omg aw" feeling along with the "hot damn" feeling.
Long story short, I LOVED THIS PIECE. You should definitely write more on them, I am eager to read more from you! I barely read fics but I have a feeling I am going to seek yours out because I love how you write!