Anashin reported on their official Twitter account on April 26 that the Waiting for Spring manga‘s thirteenth volume will be the last volume.
The manga will likewise get a reward chapter after it closes, however Anashin did not explain where the reward chapter will show up.

Kodansha Comics is publishing the Waiting for Spring manga in English, and it describes the story:
“Mizuki (sic) is a shy girl who’s about to enter high school, and vows to open herself up to new friendships. Of course, the four stars of the boys’ basketball team weren’t exactly the friends she had in mind! Yet, when they drop by the café where she works, the five quickly hit it off. Soon she’s been accidentally thrust into the spotlight, targeted by jealous girls. And will she expand her mission to include…love?”
Waiting for Spring discharged as We Hope For Blooming in Southeast Asia, is a Japanese shōjo manga arrangement by Anashin. Sitting tight for Spring is serialized in the month to month manga magazine Dessert since April 2014. During the arrangement’s run, a show CD was discharged on June 24, 2017. A live-action film adjustment was discharged on December 14, 2018.