Ongoing series follows a guy looking for his sister in a strange world

Seven Seas Entertainment announced on Tuesday that it has licensed Hideaki Yoshikawa's manga The Other Side of Secret for North America. The first volume is slated for June 7, 2016.

Seven Seas describes the story:

Yuto has been plagued by the disappearance of his sister after he witnessed her vanish through a strange portal. Seven years later, he sees two girls emerge from the same magical doorway. Not about to let this chance to find his sister pass him by, Yuto follows them back through it and is transported to a strange and dangerous world. There Yuto finds his sister but at a price. A terrible mistake costs the lives of many of that world's inhabitants, and Yuto is to blame. Can Yuto atone for what he's done and bring his sister back home with him?

Yoshikawa (Kagaku na Yatsura) began the ongoing series in Kadokawa's Comic Alive magazine last September. Kadokawa will ship the third compiled volume on July 23 in Japan.