I asked a japanese, she said that does not even exist in japan just imagine 'crying loudly' like with that impossible dirty sound sometimes it can seen in comic books

I got it , very nice information Kei San . ありがとう　ございました。

Informal ones. They might express loud voice or messy condition. Dakuten itself was invented to distinguish VOICED sound from unvoiced sound. exempli gratia: カ(ka: UNVOICED)　→　ガ(ga: VOICED) タ(ta: UNVOICED) →　ダ(da: VOICED) We have 4x5=20 letters which can be voiced with DAKUTEN (as you know, maybe). カキクケコ (kakikukeko)→ガギグゲゴ(gagigugego) サシスセソ (sashisuseso)→ザジズゼゾ(zajizuzezo) タチツテト (tachitsuteto)→ダヂヅデド(dadzidzudedo)　※ヂ and ヅ are uncommon in modern Japanese. ハヒフヘホ (hahihuheho)→バビブベボ(babibubebo) Other than these, we do not use Dakuten as formal script. The word "Dakuten" itself means "Point(s) for muddying sounds". So we often use informally Dakutens for arbitrary letters, in order to express somewhat loud, messy, extraordinary or terrible.