www.anipan.com/21661

Today is a Leonhard Euler's Death, on September 18. Rest in Peace Euler.

yay~

sorry i didn't inactive on plurk.... T-T

awwww ^^

I'm sorry so sorry >.<

aww that's bad -__-

Leonhard Euler's Death Coming Soon!!!

i'm sorry for delaying me in plurk, so i will update this if i have a time ... TT_TT

sorry for late response... -__-