The best replacement for lupin is conan.

The best alternatives to lupin are rated as following:
★★★★★  conan
★★  detective conan
★★  sherlock holmes
★★  ocella
★  lupine
★  herlock sholmes
★  conan movie
★  rayan
★  conan download
★  holmes
★  rounin
★  sun pharma
  modo
  cona
  skysong
  jadeon
  vim
  modo jade dynasty

Your alternative for lupin is not listed? Suggest!
Speaking about lupin, one probably shouldn't forget about tonks.

Other search terms related to lupin and their ratings are:
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Google Trends

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