What happened to Mikakunin from Shinkoukei?

Maybe you didn't know, but the story of "Mikakunin of Shinkoukei (Engaged to the Unidentified)" has been published for almost fifteen years, since April 2009 by author Cherry-Arai. However, after the anime adaptation produced by Doga Kobo and released in Winter-2014 (January-March), the franchise never returned to television, and its presence in the manga industry also faded.

Something you should know is that "Mikakunin of Shinkoukei (Engaged to the Unidentified)" is a yonkoma, that is, with only four panels per page, which was published in the magazine Manga 4-Koma Palette between April 2009 and February 2022, and then moved to the Monthly Comic Rex after the cessation of the initial magazine.

Evidently the story became extremely popular after the anime adaptation produced by Doga Kobo more than ten years ago, but with an original ending that buried any possibility of a continuation. Featuring charismatic characters and even an adorable loli, the story of this franchise writes:

Kobeni Yonomori, an ordinary teenager, receives a big surprise on her 16th birthday: a fiancé and sister-in-law she didn't even know she had. As a result of an agreement made by his late grandfather, Hakuya Mitsumine and his younger sister Mashiro have moved from their country home to the Yonomori home to deepen their relationship with the new members of their family.
Shinkoukei's Mikakunin follows Kobeni's "love life" with Hakuya as she tries her best to adapt to the abrupt changes imposed on her. However, as some extraordinary secrets involving the brothers come to light, Kobeni will see his life changed forever.

As we have already discussed, the story immediately caught the viewers, who were enchanted by the curious plot and supernatural details. Unfortunately, it seems that the project was never able to fully get off the ground in internal production matters, which would explain why the committee decided to approve the idea of giving the anime adaptation an original closure and burying the project.

Precisely because of the latter, the comments on forums in Japan were not long in coming:

"There never was and never will be a second season of the anime."
"Definitely the example that not every popular adaptation is guaranteed success."
"I only watched the first few episodes at the time, I thought it was a boring story."
"Mashiro-tan will always be my angel, a pity I'll never hear her again."
"I was told that Doga Kobo was the master study when it comes to life telling, but apparently not everything he does is a success."
"I remember selling about 8,000 copies of Blu-rays, but I think that would be comparable to selling about 800 today."
"Both the opening and ending of the anime were very good, which is a shame."
"Exactly ten years since the anime adaptation, what memories."