not necessary to; don't have to

If only ~

It's good / okay to... / is fine

a surname

(Internet slang) complaint; grumble

(chiefly predicative) sick, having an urge to vomit / disgusting, repulsive / Used other than figuratively or idiomatically: see 気持ち, 悪い. ("feeling bad; in a bad mood")

bright, brightening / clarifying, understanding / brighten, enlighten / open to the world / deity, god

brightness / insight / eyesight, vision

bright / light, lamp / clarifying / passing to the next in time / graceful, respectful / (Buddhism) passing of knowledge, scholarship, or study

(Buddhism) knowledge or wisdom that dispels the darkness of ignorance and brings to the realization of truth; enlightenment / (Buddhism) an esoteric mantra