I Can Only Have One Boyfriend

(I'm not sure whether the main story will be a poly relationship or a one-on-one romance.)

The Fourth Calamity descended upon the world, turning into one dangerous instance after another.

Only by conquering the instances could the world be saved from disaster.

I'm a cowardly S-rank healer. To stay alive, this frail girl who can't even take care of herself has no choice but to cling tightly to her boyfriends.

My first love's older brother disappeared on the day disaster struck while protecting me.

There's nothing I can do. Since he's missing, I'll just assume he's dead. I can only find a new boyfriend to protect me.

My current boyfriend is a yandere who treats me very well. We actually get along pretty well, but it seems he's not human.

There's nothing I can do. Since we're different species, I'll have to find someone else to date.

The person I'm cheating with is a passionate fool who wants to save the world. He'd give up his ideals and everything else for me.

But unfortunately, he's exactly the type I hate most. I'm only with him because I want to watch him get killed.

Later on,

My first love came back to life. He said he'd turned back time millions of times to save me.

My eldritch god boyfriend descended upon the world. He said he wanted us to be together forever and share a life.

The one I'm cheating with turned dark. He said he could change everything and begged me to pay more attention to him.

Every one of them loves me and would risk his life to protect me, but I can only have one boyfriend. This is so hard to choose.

Why don't you guys fight it out? ^ ^

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