Cheer Up!
Shungo falls ill after 'losing his fighting spirit' and Mayu tries to nurse him back to health, with disastrous results.
Aired 16/11/2007EP 7 - Cheer Up!

2007
Good Luck! Ninomiya-kun
Shungo is a normal high school student living in a huge house. One day, his sister Ryoko sends Mayu and Mikihiro Tsukimura, two siblings, to live with him to help Mayu overcome her problem. Mayu's problem: androphobia (fear of men), and Ryoko wants Shungo to help her overcome. How? By making Mayu and Shungo share the same room, bed, and even take baths together. To make things even worse, Reika Hojo, the student-council chair, somehow ends up becoming their maid.
(Source: Wikipedia)