Who is Damu Anna as introduced in Chapter 25, and what does the text promise about his upcoming story?

As introduced in Chapter 25, Damu Anna is a 'well-to-do person from Ahmednagar' and a 'wealthy Kasar (bronze-smith).' He is characterized as a great devotee who is devoted to Sai Baba's feet. While his full story is not recounted in this chapter, the narrative builds significant anticipation for it. The text promises that his account is a 'report that shows Sai's love for His devotees' and that listening to it will bring joy to the listeners' hearts. It is presented as a 'novel story' that, though short, is 'very pure in its meaning' and will serve to demonstrate how the 'Guru-Mother is an "Ocean of Mercy",' implying a powerful lesson or event is forthcoming.