This one definitely requires a bit more context:
I have a set of headcanons in regards to Yagami and Higashi after the events of JE. Yagami, in general, is still feeling the affects of his head injury even months after the confrontation at the ADDC.
After the adrenaline of the fight finally ran dry, Yagami collapsed and it scared the hell out Higashi. Yagami, thankfully, survived the encounter, but obviously not without several physical and emotional scars. Fearful that he'll never fully recover his eyesight again, he's terrified of what that would mean for his work and Kaito's rent. On top of that, he's still grappling with the grief following Matsugane's death and the still ever-present guilt in regards to Emi's death. He's struggling to keep himself together.
Higashi had been avoiding Yagami through everything. He was still shaken by witnessing Yagami's near-death.
And then one day, he unexpectedly wakes up in Yagami's office, barely able to see anything and a sensitivity to the light peeking through the blinds. He gets a call from himself? From Yagami, in his body, and they make arrangements for Yagami to meet Higashi at the office.