The Genshin Impact Luna I update introduces Aino, a new 4-star Hydro Claymore character from the Nod-Krai region. She’s available for free during Luna I and will also appear on Flins’ banner in the second phase of the update.
Also Check: Genshin Impact Nefer Leaks: Kit, Passives, and Constellations Rumored for Luna II Update
Aino’s primary role is that of an off-field Hydro applicator, enabling consistent Hydro reactions and providing strong team support. Since she relies heavily on her Elemental Burst and Elemental Reactions, her weapon choice plays a big role in maximizing her utility.
Also Check: Genshin Impact Luna I Update: Lauma’s Voicelines About Ineffa, Aino, Flins, Nefer, Jahoda, Varka, and Kuutar
Also Check: Genshin Impact Luna II: Imaginarium Theater November 2025 Leaks – Characters & Boss Lineup
Here are the 5 best weapons for Aino in Genshin Impact, covering premium, 4-star, and free-to-play (F2P) options.
1) Favonius Greatsword – Best Overall Option
The Favonius Greatsword stands out as Aino’s best-in-slot weapon.
- Substat: Energy Recharge
- Effect: Generates additional Elemental Particles on CRITs, helping with energy needs.
Since Aino’s Elemental Burst is the core of her kit, the Energy Recharge ensures she can cast it consistently. The passive also benefits her support role, allowing her to feed energy to the team.
2) Flame-Forged Insight – Best Free-to-Play Choice
Exclusive to the Sunspray Summer Resort (v5.8) event, Flame-Forged Insight is Aino’s top F2P-friendly weapon.
- Substat: Elemental Mastery
- Effect: Increases Elemental Mastery further when triggering Lunar-Charged, Bloom, or Electro-Charged reactions.
This synergizes perfectly with Aino’s role as an enabler of Hydro-related reactions, boosting her team’s elemental damage potential.
3) Master Key – Nod-Krai Craftable Claymore
The Master Key, a craftable claymore introduced in Nod-Krai, is another strong option.
- Substat: Energy Recharge
- Effect: Grants additional Elemental Mastery when Aino triggers Elemental Reactions.
Easily accessible and reliable, this weapon balances her need for Burst uptime with reaction-focused support.
4) Makhaira Aquamarine – Party-Wide Support
The Makhaira Aquamarine, a 4-star claymore, fits Aino’s supportive playstyle well.
- Substat: Elemental Mastery
- Effect: Converts the user’s Elemental Mastery into a party-wide EM buff.
Even when Aino is off-field, her team still benefits, making this weapon excellent for reaction-heavy team comps.
5) Rainslasher – Situational but Viable
While not the most consistent option, Rainslasher can work in the right setups.
- Substat: Elemental Mastery
- Effect: Boosts DMG against Hydro/Electro-affected enemies.
This makes it useful in Electro-Charged or Lunar-Charged teams, though its passive is less effective since Aino spends much of her time off-field.
When it comes to Aino’s best weapons in Genshin Impact, the Favonius Greatsword is her top overall pick, ensuring smooth Burst rotations. For free players, Flame-Forged Insight and Master Key are excellent alternatives that synergize with her Hydro support kit. Meanwhile, Makhaira Aquamarine and Rainslasher offer situational team utility.
By equipping Aino with the right claymore, you’ll maximize her effectiveness as a Hydro support and reaction enabler in any team composition.
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