Well, Batman might become super protective. He could lock down the Batcave to keep Robin safe while he's sick.
Perhaps Robin's sickness could be a plot by the villains. They might have infected him with something to try and draw Batman out. So Batman has to deal with that threat while also caring for Robin.
In some fanfictions, Robin's sickness could lead to him having strange dreams or hallucinations. And Batman has to figure out if they're just part of the illness or if there's some deeper meaning, like a clue to a new villain's plan.
Look to Chapter 23 for the clearest answer. It begins with Although Jiang Li exerted very little strength, Jiang Yan instantly felt..., keeps building through The pain twisted his face grotesquely as he dove headfirst into the sofa., and lands on However, just as she buried herself in the study.
If you want the clearest chapter reference, go to Chapter 72. Early on, Jiang Yan was still griping when suddenly a fair hand reached out beside...; later, the chapter leans on I'll take these, thank you." In an instant, five pairs of eyes stared over....
A practical answer is Chapter 43, because it turns the idea into a concrete scene. The chapter opens with The moment He Yun willingly sat next to Jiang Li and even took off his..., adds pressure through VIP lounges and business class still count as transformation?, and ends on Just as she turned.
A practical answer is Chapter 15, because it turns the idea into a concrete scene. The chapter opens with Jiang Shixu woke up from those nightmares filled with blood and darkness,..., adds pressure through Jiang Shixu's mind was starting to cloud, but for some reason, when he..., and ends on Since.
Chapter 40 is the strongest chapter-level answer because it starts from [Jiang Li claims she copied this herself? and follows through on The handsome guys on this show are so difficult to deal with..
The best chapter pointer here is Chapter 76, "Who knows if there is poison inside". It opens with Thinking of this, the aunt repeatedly praised, "Girl, hearing your words... and closes on Soon, Shu Yan also couldn't hold out any longer, leaning against the tree....
If you want the clearest chapter reference, go to Chapter 15. Early on, Jiang Shixu woke up from those nightmares filled with blood and darkness,...; later, the chapter leans on The two sleeping pills he took in the evening had left him with a....
Chapter 13 is the strongest chapter-level answer because it starts from Sensing that something was off with Jiang Yan, Jiang Yan dismissed the... and follows through on How could this happen..." Lin Manru didn't want to hear any more of her....
Chapter 63 is the strongest chapter-level answer because it starts from During those seven days, he thought he had completely escaped from that... and follows through on It was already past midnight, but the conference room at Xingmei....
A practical answer is Chapter 21, because it turns the idea into a concrete scene. The chapter opens with Jiang Li's clear and logical explanation had everyone stunned in place., adds pressure through Yinwan, don't worry, I won't let you suffer in vain., and ends on But the implications could be.