Context: He did n't see the need to go on ; Hakkai was smart enough to know which battle he meant -- the one that had left him wrapped in bandages for weeks . Hakkai stared blankly into the darkness as he swallowed that bit of information . Was it triggered by the head injury , perhaps ?

Question: Why is Hakkai feeling some mental fuzziness ?
Options:
0. Hakkai is just waking up .
1. Hakkai has experienced a concussion from battle .
2. Hakkai is drunk .
3. None of the above choices .
Answer: 1