@Shepherd Highway Blossoms: Remastered. Basically, it’s about these two girls, Amber (left) and Marina (right), who go on a treasure hunt road trip that eventually turns into yuri.
Marina is basically Pinkie Pie, in terms of both her personality and her voice (the remastered version adds dubbing).
One of an RPG setting’s main party members is locked in a “punishment coffin” large and cumbersome to most, but the warrior can carry it fine, and even makes a good backup weapon. The member inside it can also still use his strong magics while imprisoned and is stuck there until a certain point that his god deems his crimes paid for.