ゆりさん、こんばんは。
I have written my response on your blog. I hope you enjoy reading it!
覚
ニックネームは「覚醒（sarvodaya）」からとって「覚（か く）」です。
Kaku is the nickname given to me by ゆりさん, derived from the word sarvodaya (सर्वोदय). This, in turn, is a word that was used by Mohandas Gandhi in his 1908 translation of John Ruskin's
"Unto This Last" (1860s).