Following Season 2’s sixth episode broadcast, the official website and accounts for Toilet-bound Hanako-kun confirmed the casting addition of Kana Hanazawa (Shiemi in Blue Exorcist) as Shijima-san of the Art Room. Character visuals for her and Amane Yugi were also unveiled.
Shijima-san of the Art Room
Amane Yugi
Based on the manga by Aidalro, the first season of Toilet-bound Hanako-kun was directed by Masaomi Ando at studio Lerche, with series composition by Yasuhiro Nakanishi, character designs by Mayuka Ito and music by Hiroshi Takaki. Masaki Kitamura directed the first four episodes of the After-school Hanako-kun spin-off anime, also at studio Lerche.
Crunchyroll streams both series in a range of subs and dubs and describes the main story:
Kamome Academy is rumored to have many mysteries, the strangest of which involves the mischievous ghost of Hanako-kun. When occult-loving high schooler Nene Yashiro accidentally becomes bonded to him, she uncovers a hidden world of supernatural beings. Now the two of them are conspiring to keep the peace between student and supernatural—that is, if they can only stay out of trouble themselves.
Source: Comic Natalie