An example of how to create a custom `new` method for all Classes or just a particular Class

universe.rb

class Class
  def new(...)
    warn 'Overriding Class#new'

    instance = allocate
    instance.send(:initialize, ...)
    instance
  end
end

class Universe
  def initialize(meaning:)
    @meaning = meaning
  end
end

p Universe.new(meaning: 42)
#!> Overriding Class#new
#>> #<Universe:0x... @meaning=42>

class Universe
  def self.new(...)
    warn 'Overriding Universe::new'

    instance = allocate
    instance.send(:initialize, ...)
    instance
  end
end

p Universe.new(meaning: 42)
#!> Overriding Universe::new
#>> #<Universe:0x... @meaning=42>