The capacity of a work of fictional literature to elicit (some) emotional responses is part of what is valuable about it, and having (relevant) emotional responses is part of appreciating it. These claims are not very controversial; perhaps they are even common sense. But philosophy rushes in where common sense fears to tread, raising questions and looking for explanations.
Are the emotions we have in appreciating fictional works of art, what I call art emotions, of the same sort as those which occur in ‘real life’? Which emotions are appropriate to the work, and why: what justifies having one emotion rather than another? And why should we think emotionally responding to fiction is desirable, something which should be respected and encouraged, rather than looked at as a little weird or a waste of time?