Watashi no Musuko ga Isekai Tensei Shitappoi

Vol.3 Chapter 20: Welcome Home
Vol.3 Chapter 19: I Want To Talk.
Vol.3 Chapter 21: Say That You Believe Me.
Vol.3 Chapter 19: I Want To Talk.
Vol.3 Chapter 21: Say That You Believe Me.
About a mother who has lost her child and her former classmate. Going through her son's bookshelf, she has convinced herself that her son has reincarnated in another world and wishes to find a method to meet him, enlisting the help of her otaku classmate.