is a Japanese manga series written and illustrated by Aono Nachi. It was serialized in Ichijinsha's Comic Yuri Hime from August 2018 to December 2019, after which it was moved to online serialization on both PixivYurihime and Ichijin Plus. It is licensed for an English-language release by Kodansha USA. An anime television series adaptation produced by is set to premiere in July 2026.
At a school that takes in orphaned children and raises them to be magical weapons for war, one morning, a 14-year-old Sheena Totsuki suddenly loses her roommate. Sheena suppresses her grief and tries to act strong, until later that evening when a girl covered in blood approaches her. Despite her injuries, the girl remains cheerful, much to Sheena's confusion. The next day, the girl joins Sheena's class as a new student and introduces herself as Mimi Kagari, while Sheena finds out that Mimi is rumored to be the school's secret weapon as she is seemingly unable to die. The pair become roommates and grow closer despite their different outlooks on their situation within their school.
Written and illustrated by Aono Nachi, I Want to Love You Till Your Dying Day, was serialized in Ichijinsha's Comic Yuri Hime from August 2018 to December 2019, before moving to online serialization on both the PixivYurihime page on the Pixiv Comic website and Ichijin Plus. The series has been collected in eight volumes as of March 2025.
The series is licensed for an English release in North America by Kodansha USA.
An anime television series adaptation was announced on March 2, 2025. The series will be produced by . Takudai Kakuchi was originally announced as the director of the series; however, in February 2026, his credit was changed to "creative advisor". Yasushi Tomoda, originally Kakuchi's assistant director, replaced him as the director, with Nao Enomoto replacing Tomoda's position as assistant director. Jukki Hanada is handling series composition, Kyoko Yufu is designing the characters, and Yukari Hashimoto and Michiru are composing the music. It is set to premiere in July 2026.
I Want to Love You Till Your Dying Day was nominated for the 2019 Next Manga Award in the print manga category. It was also featured in MyAnimeList's 2024 âÂÂYou Should Read This Mangaâ list within the Unique Art/Story category.
Tatsuya Kusunoki, editor of Bloom Into You at manga magazine Dengeki Daioh, praised the series for its setting and narrative intensity.