Who is he?

Today after work I went to Chinatown to eat dinner alone. One guy who is stranger talked to me. At first I felt queer but gradually I thought he is not bad just too friendly.
He asked me do you like to sing .And always said I want to take you to Karaoke.
He regard all of japanese like Karaoke , I guess.
At last He gave me his contact number . So tommorrow I will try to call him and ,,,,,,,,,