Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
7.4.5 unless agreed otherwise by host and co-host , host and co-host may terminate the co-host agreement at any time . 

```
. OPTIONS: ['Unilateral termination' 'Content removal' 'Contract by using'
 'Choice of law' 'None' 'Jurisdiction' 'Arbitration' 'Unilateral change'
 'Limitation of liability'].