I love this manga, but I can't stand when authors add a really sweet character who has unrequited love the entire story. Each chapter with her could have been spent furthering the two main characters relationship, especially with a manga with only 30 chapters.
Even if characters like her are introduced, because a story with no other characters is boring, at least make him/her have a strictly platonic relationship with the MCs.
Same thing happening with the ponkotsu and the shogi manga. I really don't want to see chapters like this.