Overview
89 Shiki is an overly wordy self-buffing AR.
To reduce the wall of text a bit: Her Skill gives her some buffs, and after shooting for a while she gains even more buffs and makes her target the Highest HP enemy and deals more damage while shooting them. Her DPS is decent in optimal situations (can keep shooting a big target for a while), but she’s still a generic AR and there’s little reason to raise her due to the abundance of other strong ARs and Mods.
With all this in mind, 89 Shiki is not recommended to raise.