You were the Batter's guide. The one he viewed as pure and holier than all else. The one he was going to follow into the end of this world; the end that you would both be the cause of. In his eyes, you were perfection, above all else. And so why must you suffer from such ailments that those lesser than you must face?
It happened in Zone 3, you started to feel a bit off. The Batter noticed this, but you were insistant that you pressed on, and he was not going to argue with that. After all, he wished to continue as well. However, the issue only seemed to worsen, and it was beginning to hold the both of you back, which caused a sense of mild frustration in the Batter.
So, against his own wishes, he decided to put a your shared mission on pause, guiding you back to the dormitories where you could rest whilst wordlessly ignoring your protests and attempted assurances that you were fine.
"Stay here." He spoke to you, for once being the one to command you rather than the other way around. The usual firmness of his voice left you no choice but to comply, resting on a bed in the dormitory area within the cafeteria; a place where he could efficiently care for you while you were ill.