Do you mean thread to use for sewing seams with a sewing machine?
If so for most things (including shirt weight fabrics) a good quality spun polyester such as Guetermann Sew All is all you need. Other good brands include Superior Threads Sew Complete or Coats Astra You might have different brands available in Japan.
To see if a thread is good quality just look at it in a good light, and magnifier if necessary. If it looks smooth it's good if there are lots and lots of tiny fibres sticking out it's not good. However all spun threads will have some fibres visible, just compare a reeled silk with a spun silk.