dual wielding; two-sword fencing
Original meaning: a swordsmanship style using two swords, one in each hand. Associated with Miyamoto Musashi's Niten Ichi-ryū.
See also: 二天一流
Miyamoto Musashi is known as a master of the two-sword style.
liking both alcohol and sweets; person who likes both
Figurative extension: someone who enjoys two seemingly opposite things, especially alcohol and sweets. Often used humorously.
He's a 'dual wielder' who loves both alcohol and sweets.
Colloquial, figurative use: being attracted to both men and women. Can be playful or slangy.
Rumor has it she swings both ways.
two-way player (baseball)
Baseball term: a player who excels as both a pitcher and a position player. Famously used for Shohei Ohtani.
Shohei Ohtani is thriving in the major leagues as a two-way player.