Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
ncl , at its sole discretion , may allow you to link your nintendo account to one or several devices manufactured by nintendo or third parties . 

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