A hit light novel that has been well regarded in light novel reading circles and for good reason, this series is quite action and packed and the main character, Bisco is a trope-y character but his design is cool and I find him rather likeable. The story is set in Japan which has been taken over by 'rust' a disease / plague and it suddenly changes everything in the world. The world is left in ruin and covered by deserts of Japan become dessert and in this post apocalyptic world Bisco meets Milo and both start to journey together as they share a common goal, both want to find a mushroom that is supposedly able to consume rust.
Their journey together takes them to many places and their search for the mushroom of course means they stumble into many troubles. These are overcome by Milo smartness alongside Bisco explosive fighting ability. They have an interesting dynamic even though I find Bisco has a bigger draw to him than Milo.
The setting and overall aesthetic of the light novel and manga are rather vivid and cool looking which kind of left me expecting a very cool looking anime with maybe Studio Trigger's style. So i am disappointed with the anime more common style. But forgetting that, the studio in charge is a new studio and its a first time director in charge of it as well, which is probably not optimal but some other staff like Murai Sadayuki are better but its overall not the best staff. I still think its likely going to be a good action adventure series with hopefully some good heavy music and action scenes.