Shall Wipe My Tears Away and Nip the Buds, Shoot the Kids includes the characters Natsumi, Takashi and Mitsusaburo and contains a scene in which a character commits suicide by painting his head crimson and hanging himself with a cucumber in his anus.  
Mori and his father attempt to assassinate the Patron in one work by this author, who wrote about the novelist K and his son Eeyore in another work.  In addition to The Pinch Runner Memorandum and Rouse Up O Young Men of the New Age!, he wrote a novel in which a group of conspirators sing the Bach cantata Gladly I shall bear the cross before being wiped out by American agents in disguise, and another about a group of boys who are later joined by the Korean deserter Li in a barren village infected by the plague.  A more well known work by this author of The Day He Himself Shall Wipe My Tears Away and Nip the Buds, Shoot the Kids includes the characters Natsumi, Takashi and Mitsusaburo and contains a scene in which a character commits suicide by painting his head crimson and hanging himself with a cucumber in his anus.  For 10 points—name this author of The Silent Cry.
Mori and his father attempt to assassinate the Patron in one work by this author, who wrote about the novelist K and his son Eeyore in another work.  
Kenzaburo Oe