Kimi ga Shinu made Koi wo Shitai

Alt title: My Wish is to Fall in Love Until You Die

If you're looking for manga similar to Kimi ga Shinu made Koi wo Shitai, you might like these titles.

Mushroom Girls in Love

Mushroom Girls in Love

In an all-woman planet of intelligent fungi, Arriala and Erriela get married! But a member of the royal mushroom family is smitten with Erriela and is willing to start a war over her. To rescue her wife, can Arriala traverse the wild and treacherous mushroom kingdom and hope to survive?

I agree

Gabriela Senki (Light Novel)

Gabriela Senki (Light Novel)

I agree

Philia to Eros no Aida

Philia to Eros no Aida

Hoshigawa Kurumi has a crush her classmate, Nikaidou Nika, who sits in front of her in class. She's popular with guys, so she has no trouble going from boyfriend to boyfriend. One day, Nikaidou borrows an eraser from Hoshigawa.

I agree

Lilium Terrarium

Lilium Terrarium

I agree

Seesaw x Game

Seesaw x Game

I agree

Takane no Hana wa Usotsuki desu.

Takane no Hana wa Usotsuki desu.

I agree

Spice Girls

Spice Girls

I agree

Only☆You: Anata to Watashi no Futari Bocchi Keikaku

Only☆You: Anata to Watashi no Futari Bocchi Keikaku

I agree

Hoshikuzu Neverland Garden

Hoshikuzu Neverland Garden

I agree

Butterfly Kiss Blade

Butterfly Kiss Blade

Homura Tsukishima and Sakurako Hirosue are roommates at Principia Academy, a school located on an island created specifically for researching "shiki", which is a form of power created by manipulating numbers.

I agree