Otonari no Tenshi-sama ni Itsunomanika Dame Ningen ni Sareteita Ken  

Mahiru Shiina, known as "Angel" at Amane Fujimiya's school and neighbor, gave him more than just his lost umbrella when he caught a cold from her. Instead of expecting him to return it, she offered help with his recovery. Despite her unsympathetic description of his apartment as "unsightly," Mahiru proceeded to help him with various chores such as cleaning and cooking dinner. In Otonari no Tenshi-sama ni Itsunomanika Dame Ningen ni Sareteita Ken, we follow Amane as he is taken care of by Mahiru, who seems capable of doing anything to help him recover from his illness.

Otonari no Tenshi-sama ni Itsunomanika Dame Ningen ni Sareteita Ken began as a web novel on Shousetsuka ni Narou on December 20, 2018. SB Creative began releasing a revised and illustrated version of the series on June 14, 2019 under its GA Bunko label.The series has been published in English as The Angel Next Door Spoils Me Rotten by Yen Press under the Yen On imprint since December 15, 2020.