human
Subaru:  He paid ten, no, a hundred times more attention, not only in front of Ram but Rem as well. He played Subaru Natsuki, erasing the unnatural with the natural. It was simple. It was all up to him. He had to pay not the slightest bit of attention to what anyone living at the mansion really thought, bathing himself in innocence and lack of restraint, until he seemed like a lazy pig who took whatever was given unto him. As far as the world was concerned, he knew nothing, could do nothing, noticed nothing, and that was all there was to him. He continued to loiter about, wearing his charming grin like a mask. He was inside the mansion. He didn’t know who would pop out or when. His free time wasn’t free. He spent all his spare time examining his past actions and forming plans for what he’d do in the hours to come.
gpt
Subaru:  "Wh…o…a…" He suddenly felt the urge to throw up. A slight moan slipped from the corner of his mouth, but Subaru’s smile did not falter whatsoever. He kept his expression steady, skipping as he walked, practically dancing his way as he slipped into the nearest guest room.
human
Subaru:  And he stepped over to the room’s lavatory.
gpt
Subaru:  "…Blehhch. Uuogh, uuuuughnn…!" The contents of his already-empty stomach poured out. He vomited up every bit of the food and drink that had entered his body. That time, everything came out as sickly yellow stomach acid. And the internal pain that had made him spew it all continued to ache. The nausea wouldn’t go away. He gulped down running water until he was full, then expelled it immediately afterward. This repeated several times, his stomach heaving like it was cleaning itself out.
human
Subaru:  "Haaah…haaah…haaah…" Subaru roughly wiped his mouth with his sleeve, his face pale and his breath ragged. The pressure was killing him. If he kept this up without any time to rest his mind, he felt like he’d waste away and expire from that alone. He wanted to laugh at himself for putting himself in this situation, but not even the faintest smile would form on his lips. All that welled up from within his chest was anxiety and despair.