If you notice at this part we see Haru, still extemely upset and broken about the argument he had with Makoto last night.
To the left we see his stuff, including the clothes he wore last night, strewn off haphazardly.
To me this implies he ran home, threw off his clothes and crawled into bed and hasnt moved since.
What i find most important though is that he didnt bathe. He didnt even think to go near water. Because nothing could comfort him after losing his one ally (to him, the one person who wouldnt pester him about his future) and it hurts. Because now hes finally being forced to think and evaluate and understand that he does have to think about his future.
The fight with Makoto hurt him so much.