#. Dorothy

With the 3.5th anniversary approaching, many new characters have been released, inevitably leading to power creep. Utilizing Nikkes in high-difficulty content like Solo Raid requires significant resources, and since skills and Burst skills are particularly resource-intensive, they require careful investment. This anniversary event provides three Skill Reset Tickets, allowing you to reclaim resources invested in Nikkes that have fallen out of favor.

Dorothy has a Burst cooldown reduction effect, but her overall skill performance isn't particularly outstanding. Furthermore, despite being a dealer, her basic attack damage is low due to the nature of AR (Assault Rifle) weapons. Her skill mechanics are also considered problematic, as it is difficult for her to fully benefit from elemental code bonuses, which are highly influential in the current meta.

#. D: Killer Wife

Although D is a support-type Nikke, her buff output isn't significantly higher than others, and her Burst cooldown reduction performance is lackluster. With the recent release of many Nikkes that provide unconditional Burst cooldown reduction, D's value has diminished further. Additionally, when it comes to 'totem' roles, Nikkes like 'Rouge' are currently favored.

#. Tia

Tia was frequently used as a set with Naga. However, as time has passed since Naga's release, her competitiveness has waned. As Naga's utility has declined, Tia's usage has naturally decreased as well.

#. Mari (Evangelion)

Mari was once considered a must-pick for Solo Raid due to her high buff output and wide-area Burst. However, the frequency of bosses with multiple parts has decreased in recent Solo Raids, and her skill set suffers from long gaps in buff uptime. Being a limited-time Nikke, her difficulty to obtain and limit break is also a drawback.

#. Blanc

Even with the release of many powerful Burst II Nikkes, Blanc's healing ability and damage-taken debuff remain highly efficient. However, as you climb the ranks in Solo Raid, deck compositions focused on firepower become more important than survivability. While she is still useful in stages where you aren't fully leveled and need survival, her usage frequency gradually drops as you aim for higher scores.

#. Noir

Players typically use at least two, and sometimes up to three, Burst III Nikkes, often rotating them based on elemental codes. For this reason, it is better to prioritize resetting Burst I and II Nikkes before considering Burst III units.

Recently, Noir's utility has declined. Much like Tia, the frequency of using the 'Nu-Blanc' (Noir-Blanc) combination has dropped. Since Noir's individual utility has also decreased, it is worth considering a reset if you are short on skill resources.