Create a concept based on the name of an existing anime/manga that has a completely different premise.
SoL about a German who works at a toll booth.
SoL about a girl's swimming club.
There exists a hotel that you can only visit once. Upon arriving there, you will meet your destined lover, and the two of you spend one night together before being returned to your respective homes.
However, the journey to the hotel is a perilous one. There is no clear path since the hotel is magical in nature, so everyone who attempts experiences something unique, and must confront their own inner demons and issues. If you give up along this journey, your lover will as well, and you will not meet. However, if you succeed, you will arrive at the hotel at the exact same moment, and your fates will be tied during the night you stay there. Even though you will be separated afterwards, you can still find a way to meet again.
It's a show about military Geese in a sub with nuclear launch codes.
>main villains are Canadian geese
Related to Code Geass, this would be the sequel to R2, focusing on Suzaku.
SoL about a dollar store on its "going-out-of-business" sale
cyberpunk nuns shoot guns and hack computers
Each of candidates for the nobel prize summon a random past (or future) nobel winner, and they have to team up with them and impress the judges.
It's more of a comedy anime, with no serious threats, though. There will be scenes of the laureates getting drunk, arguing over inane things, bonding, playing stupid things like dare, and of course, procrastinating until the last moment and hurrying up to deliver whatever they were working on.