Possibly Futago no Tamashii
Futago - (a) twin
Tamashii - Soul
futagogokoro
pliojnhn
'Twin tigers' is双子のトラ (futago no tora) in Japanese.
No, souls don't exist.
Imōto no futago no imōto
双子の猫 = futago no neko
Nope.
Martin D. has written: 'Twin souls, twin swords'
'Twin' in Japanese kanji is双子 (futago).
ツインサソリの手裏剣 Tsuinsasori no shuriken
Alma gemela. (pronounced ALL-ma heh-MAY-la)
In the seventh stanza of "A Valediction Forbidding Mourning," the twin compasses symbolize a strong and unwavering connection between the two lovers. The image of the compasses suggests that despite physical distance, their souls are spiritually connected and will always come back together.
You may say 'futago no kumo,' written: 双子の雲