The Alley Hunter bow in is part of the Alley weapons series originally released early in the game's history in 1.4. This 4-star weapon may be worth considering for your bow-user characters that need a boost in their damage.
With the recent release of 5.2, this bow may have become relevant once again, and you may want to consider keeping your eye out for one to invest in for your best bow class characters.
Bows are a class of weapon that has the ability to mix up combat, as well as the bow-user characters themselves. The Alley Hunter bow focuses on increasing the damage of characters that will need to be more off-field damage dealers, and a variety of characters can benefit from its weapon skill.
There are also ways to incorporate the bow into support builds, so there are many ways for you to put the bow to use. The Alley Hunter Bow can currently only be obtained on the Weapon Banner, Epitome Invocation.
It was last seen on the 4.5 banner, alongside the release of Chiori and her signature sword, Uraku Misugiri. It was also seen as a weapon that could be obtained on the Chronicled Wish banner, Ode to the Dawn Breeze, in the same 4.5 patch update.