If fanservice is gratuitous T&A that exists solely to titillate its audience, then the massage scene in WorldEnd is fanservice in its purest and most distasteful form. So how could it have done it better?
WorldEnd: What do you do at the end of the world? Are you busy? Will you save us? TagResults
This wasn’t just good “for an LN adaptation”; it has potential to be a really solid fantasy series in general.