adverb
strangely enough; oddly; by a strange coincidence
Used when something happens in an unexpected, coincidental, or ironic way. Often carries a nuance of fate or mystery.
奇しくも同じ日に二人とも同じ場所にいた。
Strangely enough, both of them were at the same place on the same day.
奇しくも彼の予言が的中した。
Oddly, his prediction came true.
不思議にも also means 'strangely' but focuses more on wonder or mystery, while 奇しくも emphasizes coincidence or irony.
偶然にも means 'by chance' without the nuance of strangeness or fate that 奇しくも carries.
Derived from the adjective 奇し (kushi, 'strange, mysterious') + く (adverbial inflection) + も (emphatic particle). The adjective 奇し is archaic and rarely used independently in modern Japanese.