Meru's father who appears from the final episode of Zoku Sayonara Zetsubou Sensei. He calls his daughter 'Meru Meru' and tries to do anything that she wants, but Meru herself does not want him to interrupt her.

Nozomu Itoshiki is depressed. Very depressed. He's certifiably suicidal, but he&rsquo;s also the beloved schoolteacher of a class of unique students, each charming in her own way: The stalker. The shut-in. The obsessive-compulsive. The girl who comes to class every day with strange bruises. And Kafuka, the most optimistic girl in the world, who knows that every cloud has a silver lining. For all of them, it's a special time, when the right teacher can have a lasting positive effect on their lives. But is that teacher Itoshiki, a.k.a. Zetsubou-sensei, who just wants to find the perfect place to die?
 
(Source: Kodansha USA)

More crazy antics abound as Nozomu Itoshiki, a.k.a Zetsubou-sensei, who is the worlds most negative person, tries to teach class 2-H about how life is filled with despair and darkness. A harder task than it first may seem, with his students being far from ordinary themselves, including the likes of the most positive girl he has ever met, his very own stalker, a foreign exchange student with split personalities and a perfectionist acting class president, due to the fact the real class president can't be seen by anyone, among others. 
(Source: Anime News Network)

Mugihito is a Japanese actor, voice actor and narrator from Musashino, Tokyo. Mugihito was formerly credited under his birth name and also Mugihito Amachi (天地麦人).

Nozomu Itoshiki is still the bizarre teacher of the even stranger Class 2-H. He attempts to teach his students the negative aspects of the world and society, only to have each circumstance thrown at his face whenever he tries. With more students and friends than before, Zetsubo-sensei's life becomes harder and crazier than ever before. 
(Source: Anime News Network)

A new special episode that was distributed to those who purchase all three Blu-ray box sets of Sayonara Zetsubou Sensei series on January 31, 2012.

Meru no Chichi