If you're looking for manga similar to Iyagi Yeohaeng, you might like these titles.
Weiss has one dream and that is to see the sky. The city that he and everyone else lives in has a large and what seems to be a never ending ceiling. With the help of his friend Nero, Weiss plans to one day break through to the top and see the sky that no one has ever seen. On one of their missions, Weiss and Nero meet a mysterious girl in black named Nowall who tells them that there is no sky, but before she can completely explain, she gets abducted by the Black Police, a peace keeping robot squad. Now Weiss and Nero have to rescue Nowall and learn the truth about the sky. What they don’t know is that the truth is way over their heads.
In the name of a good and healthy lifestyle, the Good For You Party has banned sweets, pastries and chocolate in favor of nutritious substitutes such as fruits and vegetables. Smudger has to watch his father's pastry shop fail under this new government rule, but when Smudger and his friend Huntly discover a secret cocoa shop in an abandoned mine, they realize that there might just be hope for sweet tooths everywhere!
After defeating the evil General Onox in Holodrum, Link returns to Hyrule. One day, Impa, Princess Zelda's attendant, asks Link to accompany her into the forest to find Nayru, the Oracle of Ages. But Veran, the evil Sorceress of Shadows, has possessed Impa in order to deceive Link. Veran then possesses Nayru and travels back to the past to kill one of Link's ancestors so that Link will never be born! Link once again battles across time to save Hyrule--and himself!