Regrets of God's Children

Do you have any regrets? I sure do.
Follow Neo Belclift in this fantasy one-shot in his quest to learn about "shadows" in this tragic and fearful world.

Note: The oneshot was from 2019, published in Hana to Yume. The seriazilation started in 2020 on Manga Park with the same title (the oneshot and the 1st chapter are the same one). The extra case chapter was published in Shounen Hana to Yume's first issue and that chapter was added to 2nd volume of the series.