[Trainers' Teamwork] Aoi Kiryuin

SR Friend

Analysis

Tier C. A cheap Friend SR with a solid safety net, but no Friendship Bonus and filler skills keep it a stopgap until you pull a real one.

Aoi lives in the Friend (Pal) slot, which you run for the date event and training economy, not for rainbow bonuses. The raw numbers are fine for an SR. Maxed you’re looking at 50% Event Recovery, 30% Event Effectiveness, 25% Failure Protection, and 20% Energy Cost Reduction. The Lv25 unique tacks on another +10 Failure Protection and +5 Energy Cost Reduction. That covers one job well: keeping a trainee out of the red-energy failure zone on longer builds. Round it out with the Initial Friendship Gauge (10 to 25), 5% Training Effectiveness, and a small Initial Wit bump.

Here’s the catch. A Friend card earns its slot by buffing a stat, and there’s no Friendship Bonus here at all. So it never supercharges training the way the top Pals do. The skill kit doesn’t save it either. Maverick, Lay Low, Shake It Out, and the pace-down pair are situational filler.

The real knock is the competition. SSR Friend cards hand you stronger event packages and actual training payoff, so this is what you slot while you grind toward one.

• Pros: strong failure and energy safety net, decent event recovery, cheap to make functional.
• Cons: zero Friendship Bonus, weak skills, outclassed by every SSR Friend.

Don’t target it on banner. Build it only if the slot’s empty.

Card details

Field	Value
Character	Aoi Kiryuin
Rarity	SR
Type	Friend
Obtain	Gacha
Global release	Jun 26, 2025
Hint skills	None listed
Event skills	Maverick ○, Subdued Front Runners, Hesitant End Closers, Lay Low, Shake It Out

Support effects

Effect	What it does	Values
Training Effectiveness	Increases the effectiveness of training performed together	Lv45: 5%
Initial Wit	Increases initial Wit when beginning a Career playthrough	Lv30: 10, Lv40: 20
Initial Friendship Gauge	Increases initial Friendship Gauge when beginning a Career playthrough	Lv1: 10, Lv25: 20, Lv45: 25
Event Recovery	Increases Energy recovery from this Support Card’s events	Lv1: 10%, Lv25: 40%, Lv45: 50%
Event Effectiveness	Increases stat gain from this Support Card’s events	Lv1: 10%, Lv25: 25%, Lv45: 30%
Failure Protection	Decreases the probability of failure when training together	Lv1: 5%, Lv25: 20%, Lv45: 25%
Energy Cost Reduction	Decreases Energy consumed when training together	Lv1: 1%, Lv25: 15%, Lv45: 20%

Unique effect

Unlocks at Lv 25. Failure Protection: +10, Energy Cost Reduction: +5