Responses
SPOILER
.
.
.
.
.
.
After j went into the rift, they stopped LSY’s treatment soon after (j was paying for his treatment & the money ran out). A researcher tricked LSY into going with them, and since they were gonna stop his treatment anyway the hospital staff just let the researcher take him.
As for when LSY found out he is J, iirc it was before the auction

I feel bittersweet somehow from everything that they went through to get here. I just hope that they don't get separated again.
I like to know how he end up there getting experimented and when the exact time he know that he was J all this time.