Conan: The Romantic Daily Life of a Ghost Detective

What are the key abilities to become an excellent detective?
Observational skills, logical thinking, combat skills, extensive knowledge base...
Wen Shui and Shu do not possess any of the above abilities, but he has a cheat code that allows him to become stronger by gathering materials.
By experiencing events that could be written into a novel, one can gain enhanced abilities and then continue to participate in even more intense and exciting cases.
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Warm Water: That being said, isn't it too much to start with someone like the Slit-Mouthed Woman?
Ai Haibara: "If we back down at this point, we won't be able to fight against the organization."
Ran Mouri: "The potato chips at the supermarket next door are half price! Let's hurry and grab them!"
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The Slit-Mouthed Woman, the Fox Spirit Tamamo-no-Mae, the Fairy Tale Murder Case... the truth hidden behind each strange event is a manifestation of human selfishness.
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This book is also known as: "The Tragic Love Triangle Between My Girlfriend and Someone Else's Childhood Friend" and "To Pay Off My Debts, I Had to Transform the Girls in My Class into Beautiful Girl Detectives."