大義のために (taigi no tame ni) would mean "For the greater good" in Japanese. It's literal meaning is "In order for the great righteousness", but due to colloquialisms it would be the best approximation of "For the greater good".
its "Ohayo gozaimasu. Ogenki desu ka?"
To literally wish someone good 'luck/fortune' in Japanese you can say 幸運を祈る /kou un wo i no ru/ [lit: I pray you fortune]. But in Japanese 'ganbare' [lit: Do your best!] is more common to be used.
I had a great weekend it is really Watashi WA ii shūmatsudatta for good weekend.
we say Nakagawa if we want to say inside in Japanese.
メロン is how you say melon in Japanese.
Sayonara .
You may say 'oshare' in Japanese; it means "fashionable," "stylish."
yoi or ii
If you meant to say "konichiwa" then it means good afternoon/good day in Japanese :L
Ohao Gozaimasu.
yoi shokuyoku
Ohayo (OHIO)
鬼 /o ni/ is a good Japanese equivalent for what you are looking for.
'ii', or 'yoi'.
You may say 'ii.'
You can say 'ii bousan'.
Among others, you may say 'ii.'