Warai no kura

Warai to warai no geijutsu

Warai no tetsugaku

Warai no kenkyuu

Warai no kansatsu

Warai no oukoku

Moyou no kura

Warai wa kenkou no moto

Warai no kuni : kyuuka no tomo

Kokkei shouhin shin warai no kuni

Sei no modae to bikushou no kenkyuu : warai no dendou

Warai no tenchi : sasaki kuni shuu

Nikoniko warai hitokuchihanashi

Bungaku ni arawaretaru warai no kenkyuu

Horinuki ido fukidashi warai

Ehon warai jogo (Object)

Hitokuchi warai : otoshibanashi

Horinuki ido fukidashi warai

Wahhahhā : atarashiki warai to kyoukun

Backstage of "Warai no Okoku" (Comic Kingdom), Tokiwaza Theater, Asakusa, Tokyo

Fumi no kura

Takara no kura

Kura no naka

Warai Hannya (Object); Hyaku Monogatari (Series)

Shichiya no kura