Pasting a post from earlier:
Sun耀界 ●: fantasy and magic sword ... sunny daylight world of sword and magic. The atmosphere is like in medieval Europe. Since the fighting supremacy around humans and demons, the hero apparently hard lot.
Mon耀界 ●: "Harmony" hearts and "Twilight" ... Sobie立Chi fusion of the Edo period, such as castles, always shining in the sunset "wa" and "Twilight," a unique blend of the world. 世界Rashiku the Japanese, samurai armor and may have such monsters?
Tues耀界 ●: hope devil descent! Flaming earth covering the ground ... the world of burning lava and flaming red variant plants. This world is like customs have changed, especially waiting for the arrival of the people why Satan.
Wed耀界 ●: the world of magic and science both ice ... that both technology and magic of science and technology, and in the modern world of fantasy. In the world of silver in snow 降Ri積Moru. He guided Marina inter-generational hero of this world, often alludes to get lost in the sense of direction.
Thurs耀界 ●: Nature World ... the world of nature spread spread huge natural lush green plants. In an atmosphere where primitive undeveloped region can be said, even lower level of technology. However, the enemy (animal?) Could be huge ...?
Fri耀界 ●: Future World's largest mechanized ... advanced science and technology, machine controlled world. Unlike in the rest of the world a much fantasy, with a futuristic atmosphere, such as lines of light running along the building. If you or a robot?
●? ? ? : Seventh world ... shadowy world of the seventh, but no name is unknown but climate and culture. That illustration, it appears almost like a black hole. Sat 耀界 the order, but if ...?
So if I got this right:
Sun - Medieval fantasy world. There is a war between humans and demons.
Mon - Feudal era world. Apparently it's always sunset, or at least daytime looks like sunset.
Tues - Looks like the Underworld/Hell. Satan's mentioned, they seem to want him to revive or something. Wonder how that'll go if this gets localized.
Wed - Urban fantasy world, or a world that is modern like ours but contains fantasy elements like magic or magitech. It's always snowing, it looks like.
Thurs - Forest/Prehistoric world. There are probably very few humans and what humans there are live primitively.
Fri - Futuristic/Sci-fi world. Things run by machines and lots of robots. Will we see a robot girl?
Sat - Unknown. From the note about it being "shadowy" and that there's a "black hole," it appears that it's somewhere in outer space or in some weird dimension. I have the suspicion that this will be the final world and/or dungeon.