pleasant, delightful, fun, enjoyable

play, amuse oneself, enjoy oneself / spend one's time idle, do nothing / for an item not to be in use, be spare or idle

happily

ancient times, a very long time ago

両: two / 両: short form of 両個 (ryanko)

The hiragana syllable りゃ (rya). Its equivalent in katakana is リャ (rya).

the past, old times / ancient

once (in the indeterminate past)

olden days; former

pond, lake, moat / object used for storage