Yo-Kai Watch 4 and Inazuma Eleven Ares are both very big titles for Level-5, and both saw major delays in their releases. Level-5's president Akihiro Hino explained some reasoning for the delays in both games over the last few months, but a new report states that there might be more to it than he's letting on.
Rumor is that Level-5 actually saw a ton of employees leave in recent months, leaving them without enough manpower to tackle the projects. Obviously without enough staff, you can't get projects out the door as expected. No reason for the mass exodus of employees was given.