You don’t need to know precisely what the intended redactions are, just what letters they generate and then confirm these letters are components of the five characters in the grid based on where they cross (or in two cases give full solutions). In some cases the intended redaction is clear (e.g. 13a, 15a, 22a, 3d) , in some there are several options that could work (e.g. 18d, 24d).
Based on the preamble I think the fully redacted clues are definition only. 5,23 has the right number of words for another related book title that describes the character in question, but I can’t quite make sense of the commas and some word lengths don’t look quite right either.