The European bitterling is a type of freshwater fish that shows beautiful colors especially in spring.

Japanese people are said to be very polite.

Boon to iu mono wa a i u e o no goji, hanboon to iu mono wa wa wi u we wo no goji o iu no de arimasu.‘Mother sounds’ are the five letters a, i, u, e and o. ‘Semi-mother sounds’ are the five letters wa, wi, u, we and wo.