i am building a book
it called muiltiverse coilleded worlds (original story) the real book
but i am running out plus (writer block)

Do you mean collided?

if you're making a multiversal story
try making it more of a mess like you know movies like 'tenet'
it's cool but we don't understand anything

about ideas
try adding character alts like
there is a cool main character and now there is another cool but evil alternative of him

And Thank you

For an idea on your book how about a giant explosion when the galaxies collide? Then the main characters race against time to fix it before the remains of Earth is destroyed