Yeah. He did occasionally make feeble noises pushing Ak to Ab but for the most part he acts as brother to Ar not Ak.
Ak said “mein uske liye pyaar mein barbaadh hone ko thayaar hun” to Kv and he simply sat on his a**
More than useless I think Kairav has been a little biased towards Arohi.. since the beginning Kairav knew a lot of things, like Abhira pics (after which he asked akshu to leave) then akshu ka stance during ruby track. It was clear to him that even akshu loved abhi but he didn't help the couple and stayed silent.
So I don't know what inference should be made about Kairav
She is the parallel lead ( I have been stuck with this answer whenever I questioned) 🤣🤣🤣🤣
124