The 28th chapter of Shimeji Simulation first appeared in Monthly Comic Cune October 2021 Issue on sale on August 27, 2021.
Plot
Shimejime decide to investigate the dreamstones. While examining them, they encounter Yomikawa chilling on a rock reading a book (it is not shown which book). Sis appears from one of the dreamrocks and tells Shimejime about them. She also lets Yomikawa know that she remembered who she is. The three girls (Sis + Shimejime) enter a dreamstone and start exploring various dreams. In one of the dreams they see the Neighbors, and giant Yoshika in the danchi dream, that they are going to explore. In the next chapter, perhaps?