He lies on the hospital bed with an oxygen mask on his face. There is an IV on his arm, as well as many devices connected to his body. Tachihara looks at the ceiling tiredly and can’t even move. His body doesn't listen to him.

But the whole point is that his operation did not go as it should have, and right during the operation the heart-lung machine turned off, so the operation had to be stopped urgently. They can't operate on him until Tachihara recovers at least a little.