Wait- people are mentioning like another part of this story.... someone explain pls

There is a prequel under the author’s other works. It’s Itsuka Koi ni something or other.

Ohhh ok tysm

but actually it’s not the prequel for this, but itsuka koi ni has a sequel named akete mo kurete mo : zoku : itsuka koi ni naru made

Isn’t it a prequel? It has the same characters and it’s when they are in high school?

yes they are the same names but no it’s not the prequel, they are different stories