Bug report

Bug summary

I cannot write Japanese comments on matplotlib's graphs.

Code for reproduction

import matplotlib.pyplot as plt
data_a = [1, 2, 3, 4, 5]
data_b = [1, 4, 9, 16, 25]
plt.title('V_DS-I_D特性')
plt.scatter(data_a, data_b)
plt.show()

Actual outcome

https://imgur.com/HUTjUPQ

The part written in Japanese appears as weird rectangles.

Matplotlib version

• Latest Google Collaboratory