Kochira Katsushika-ku Kameari Kōen-mae Hashutsujo
On 21 February 2016, it was announced that she became a model for Anna Sui in Asian regions. She published her first solo photo book, "Kimi no Ashiato", on 24 February 2016. It sold 16,000 copies in its first week, and ranked 1st on the Oricon weekly photo book sales chart. On 29 March 2016, Rina Ikoma participated in the ceremonial first pitch before a baseball match between The Fukuoka SoftBank Hawks and the Saitama Seibu Lions. She also appeared in SoftBank's advertising as the voice of "Giga-chan". In the same year, she reprised her lead role in the sequel to the "Corpse Party" film, "Corpse Party: Book of Shadows". The film was released in Japan in July 2016. Ikoma also appeared in a musical adaptation of "Kochira Katsushika-ku Kameari Kōen-mae Hashutsujo" in September 2016.