Changes of Heart Series by Kujira

After being dumped by her boyfriend, Koyori went to her longtime friend Hijiri's house to drink away her sorrow... and ended up spending the night with him! Not only that, he tells her he loves her -- and she's not sure how to reconcile the new development with someone she's known since they were kids. After all, the stakes are high -- if things don't work out, she'll hurt one of her closest friends. And to make matters worse, her ex wants to patch things up.. moreAfter being dumped by her boyfriend, Koyori went to her longtime friend Hijiri's house to drink away her sorrow... and ended up spending the night with him! Not only that, he tells her he loves her -- and she's not sure how to reconcile the new development with someone she's known since they were kids. After all, the stakes are high -- if things don't work out, she'll hurt one of her closest friends. And to make matters worse, her ex wants to patch things up...? Koyori needs to figure out what she wants, before she loses it all. less

Hijiri is childhood friends with Koyori, who has recently returned his feelings. But after spending years as "just friends," it means that they're already teeming with nerves at a single date. With all that going on, they've managed to set up plans for an overnight trip together!

Childhood friends, Hijiri and Koyori have just gotten together, nurturing a first crush from long ago. However, they run into interference from both of their exes! While Koyori is struggling over that, Hijiri makes it clear that to her that he wants to focus on the "present" with her.