I've just have some fun with this hiragana game and recieved a headshot from this stuff. Is there any way, that things like this could be fixed? Few moment later I've seen another same characters with the same name Q_Q

I see the problem. One question, two duplicate answers :/

I've made a quick update that should force all the Japanese names to be different. If it doesn't eliminate the problem, it should at least make it less likely.

Should you spot any more, a screenshot will help in making changes to the characters. ^^

私は日本語を少し読むと書くをできます。あなたも？

Will do, thanks for such a quick response!