No CP, but there are secret identities, the protagonist getting affectionate with his real self, and all kinds of romantic rivalry, so this is filed under danmei.
Jiang Siyi has a rare, strange illness.
Medical tests show that his body is perfectly healthy,
but in reality, he grows weaker by the day.
One day, an extraterrestrial being calling itself a System comes to him.
The System tells him
that if he successfully completes his missions, it will grant him one wish.
He must travel through different worlds to gather fame,
and the System will provide him with secret identities.
Jiang Siyi is tempted, so he agrees.
Just as he begins his mission,
the System tells him that the world he lives in is about to be destroyed.
Jiang Siyi has no choice but to complete his mission while controlling secret identities from another world to save the world.
As a result, some strange shops appear in the real world.
[Bookshop]
The bookshop's owner is a young man who wears gold-rimmed glasses
and is always writing something.
The books sold in the shop don't exist anywhere else on the market.
They say the owner wrote them himself.
[Doll Shop]
The dolls sold here look lifelike.
The owner jokes
that one day, they might really come to life.
Maybe it isn't a joke.
[Zoo]
The zoo director is very popular with the animals.
But if you look at these animals for too long, something seems a little strange.
They almost seem to have gained human intelligence.
[Incense Shop]
A shop has appeared out of nowhere at the end of a certain street.
This shop
runs on the principle that sincere faith brings results.
Only those who are sufficiently "lucky" can see it.
The owner occasionally tells fortunes at the street corner.
Tips:
1. Quick transmigration, one secret identity per world. Every identity has its own storyline. After each mission world ends, the story will return to the real world, and the two will be written in alternating sections.
2. The secret identities will have some degree of independent consciousness, and they all love the real self. (I absolutely adore secret identities getting affectionate with the real self, and romantic rivalries that happen because they want to be close to the real self are just so cool, okay?)
(Plans change, so to ensure steady updates, I'm planning to start posting during summer vacation.)
Theme: Stay positive and make the most of every day.