So... is Tight-rope finished or not?
NO, it is not finished.
Why?
The anime finished after the manga:
Anime finished: June 27, 2012
Manga finished: September 13, 2008
... But MangaUpdates contains information about the anime adaptation and indicates that it is incomplete.
Watching Order (by release date)
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
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Synopsis
Tight-rope is a story about two childhood friends, one of whom is destined to inherit a yakuza family.
The anime follows the development of their romantic relationship, which begins during their school years.
It depicts a gradual and steady unfolding of their love for one another against the backdrop of the yakuza world.
The plot focuses on their personal journey and connection as they navigate their feelings and the challenges posed by the heir's family obligations.
Expect a character-driven narrative centered on love and loyalty, within a context of yakuza heritage.