Lord of Mysteries + Detective Conan + certain characters from other anime

The male protagonist has no romantic partner.

Lin Xiuming is just an identity; in reality, he is Morofushi Hiromitsu, who survived death but lost his memory, and went from being Shinichi Kudo's neighbor to becoming Conan's right-hand man.

Order of appearance of important Conan characters:

Date Wataru (Weapon Master), Chapter 4; Kudo Shinichi (Reader, Deduction Student), Chapter 5; Mouri Ran (Lucky Guy) and Suzuki Sonoko (Praiser), Chapter 11; Professor Agasa (Craftsman), Chapter 20; Amuro Tooru (Nightmare), Chapter 28;

Liu Xing transmigrated into the world of Food Wars! and opened a small restaurant outside the Totsuki Culinary Academy. This small restaurant not only lowered the prestige of Totsuki Culinary Academy but also constantly embarrassed the academy. However, Totsuki Culinary Academy was powerless to do anything about this small restaurant.

[Starting with Snivy + System (assistance) + Protagonist growth (readers who like starting with legendary Pokémon are advised against reading this) + Suitable Pokémon gender (choose based on Pokémon characteristics, no fixed preference)]

Ye Lan, who is obsessed with Grass-type Pokémon, wakes up to find the world completely changed!

Ye Lan was dumbfounded as she looked at all the news about Pokémon on her phone.

"Am I crazy? No, I'm not crazy! This time, I'm determined to lead the Grass-type to the top!"

"Ding! Congratulations, host, you have awakened the Grass-type Elite Four Training System!"

Natsukawa Tora transmigrated to Type-Moon. Lacking magic skills and connections, he was busy working odd jobs, initially thinking he'd be the most pathetic transmigrator. But everything changed after he was chosen by the Holy Grail and summoned King Arthur (Old Saber). Especially after the Holy Grail War ended, and Old Saber became his [Special Forces Machine], turning him into Old Saber Superman. ...On a certain day, in Chaldea, in the same familiar corridor, around the same familiar corner. "Sajyou Aika, don't come any closer! I don't know Arthur, really! -- Emergency call!" [Being being teased by a friend's old face [I'm telling you, Souji is super cute]]

Inside a clock tower, a professor is introducing the flourishing of European magic. "I'm telling you, only Europe is the center of magical knowledge; other regions are just places for country bumpkins!" "But teacher, Japan is hosting the Holy Grail War! I heard it's related to the Third Magic." "...That's an exception; Japan is still the countryside." "But the Fifth Magician is also in Japan." "That's an exception; it doesn't prove anything." "The descendants of the First Magician also live in Japan." "A...an exception..." "But the Fourth Magician is also in Japan...Teacher? Where are you going?" "Pack my bags and move to Japan!" --- A singularity descended from beyond the origin, he inherited the path of a magician and began to travel the world. Indifferent to destruction, indifferent to the future, he simply passed by like the wind. But his originally light steps unknowingly became heavy due to numerous karmic connections. The fairytale witch, the moon princess, and the sometimes-gathering, sometimes-scattering Fifth Magician—their existence bound his thoughts to the planet. Then he understood that in order to live up to their expectations, he would guide the world to a future without the Steel Earth and the Moon Coral. (Storyline: The Night of the Wizarding Magus - Tsukihime -)

Reporter: "Mr. Daidouji, many people say your policy platform is too radical. What's your opinion?" Daidouji Sousuke: "The more they oppose me, the more it proves I'm right." Reporter: "And some people say that after you joined the Metropolitan Police Department, the level of crime in Japan suddenly escalated. What's your opinion on this?" Daidouji Sousuke: "This proves that our law enforcement methods are still too lenient and haven't deterred criminals." Reporter: "Then could you explain why your election opponents are often involved in inexplicable murder cases? How do you control all of this?" Daidouji Sousuke: "Sorry, no comment." Watching this finally revealing scoundrel leave, Daidouji Sousuke sternly ordered: "Come on, take Conan to this reporter's house for two days..."

[Detective Conan fanfiction, no romantic pairings, original pairings not broken] With an innate keen sense of smell, Takashima Munenori embarks on the path to becoming a police officer to uncover the truth behind his parents' deaths. Little did he know that after helping the police solve his first case, he would earn the nickname "human police dog." [Will involve real cases, Kindaichi cases, and cases from Japanese dramas, etc.]

(A poorly written story about a mediocre spy's rise to power, dedicated to supporting the CCP; please refrain from negative comments if you dislike it!)

He was cannon fodder for the Kuomintang secret service, yet he possessed the supernatural abilities of infinite space and super hearing! With his unerringly accurate flying screwdriver technique, he rose to become the top assassin in Shanghai, and by chance, infiltrated the 76th Division. In the turbulent world of espionage, he killed Japanese soldiers, slaughtered traitors, and supplied money and equipment to the guerrillas…

[Day 1 of time travel, Tokyo, Japan. I'm just five years old. Good news: my family is rich. My childhood friend in a kimono is adorable.] [Day 3, bad news: 1983, Japan's bubble economy is on the verge of collapse. Coincidentally, my family is in real estate...] [Day 10, Holy crap! A system! My childhood is saved! This skill makes money, learn it! This skill increases intelligence, learn it! This skill can see through lies, learn it! And combat skills? Too expensive, using them would only increase medical expenses and compensation costs, don't learn it.] [Year 6, the real estate economy collapses, many companies go bankrupt, but my family's business is booming. We invest in schools, build bridges, and even take over the bankrupt main family's assets. Our time to separate and hold our heads high has come!] [Year 6 and three months, the main family's woman remarries my father. My new, cheap cousin is adorable.] [Fifteenth year, university opening ceremony. I meet my childhood friend whom I haven't seen in a long time. She says her name is Ryougi Shiki.] Is it too late to learn magic now? Nobody told me this was Type-Moon!

(American police + daily life + gunfight + promotion + mature woman)

Arthur Morgan is reborn in Los Angeles and discovers he has a Red Dead Redemption system.

He was once the King of Fighters in the West, the King of Widows in the West, the King of Hunters in the West, the King of Hello in the West...

Now it possesses the Death Eye, Widow's Affinity, Tracking...

Having been given a second chance at life, I will not be a bandit but a policeman. My goal is redemption and to save as many widows as I can.