A 43-year-old Japanese piano teacher’s sudden divorce from her online husband in a virtual game world made her so angry that she logged on and killed his digital persona, police said Thursday. The woman, who has been jailed on suspicion of illegally accessing a computer and manipulating electronic data, used his identification and password to log onto popular interactive game “Maple Story” to carry out the virtual murder in mid-May, a police official in northern Sapporo City said on condition of anonymity, citing department policy.