|Full Name||Takeuchi Riki|
|Aliases||NenDad (by Kusuo)|
|Manga Debut||Chapter 17|
|Anime Debut||Episode 8|
|English Voice||Ono Daisuke|
Riki Takeuchi (竹内 力, たけうち りき lit Takeuchi Riki), usually called as Nendad by Kusuo is the former husband of Midori.
Takeuchi's defining physical attribute is the scar on his right eye, something that can be used to differentiate between him, his son and wife who all have the same faces. Back when he was alive, he wears old style clothes while as a ghost, he wears a white hakama.
Like his son, he has a carefree attitude and idiotic in manner. He is persistent on a whole new level than his son like when he haunted Kusuo because of his interesting powers until Kusuo scared him off with a punch.
He seems to help his son without even realizing who he is until he found out and was shocked that he had a child.
Takeuchi was first introduced as Reita's spirit guardian. He later shows up and continued to bug Kusuo because he entertains him. Nendou also calls him partner just like his son does. He also likes ramen and once asked Kusuo to eat with him (when he was alive during Kusuo's accidental time travel).
Takeuchi died when his son was still young. He was idiotic like his son as Kusuo met him when he accidentally went back to past. The reason he died is because he saved a little girl from a vehicle.
Takeuchi became a ghost and is the guardian of Toritsuka Reita, and he is constantly seen pestering Kusuo to the point which the latter had to use his psychic powers to make him go away. Saiki then punched him in his spirit form.
He helped Riki pass midterms.
|v · e||Nendou Family|
|Members:||Takeuchi Riki · Nendou Midori · Nendou Riki|
|Miscellaneous:||Nakanishi Kouta · Kojikara No. 2|