Regarding this, I think i can be of help...

If people think that we are dating, then your sister would garner less attention. Compared to a younger sister whom you haven't seen for years, a passionate lover should have a higher hostage value.

Ah this, you might be in danger...

To be able to protect the Radiant Knight's younger sister is my honor.

If you feel apologetic, then just follow me to that hotel for a bit to use up this voucher, it's expiring soon... (just bought yesterday)

Alright, I'll acoompany you.

It's different from the novels...