Beast of Reincarnation Rapport — Koo & Kagura Guide

Rapport Is Not Koo’s Level — Read This First

Two systems get confused constantly because both involve Koo getting stronger:

You need both for the platinum, but they progress independently — grinding enemies will never max your rapport, and petting Koo all day will never level him.

Raising Koo’s Rapport

• Stroke him. Walk up from the front, take the Talk prompt, pick Stroke. Unlocks after the Rangifer fight and the flashback. ⚠ cooldown disputed One guide says once per day, another says once per completed quest.
• Treats. Press down on the d-pad to open the quick menu and feed him — cheapest repeatable gain.
• Keep him fed. Regular food that fills his hunger bar gives a smaller bump. Emma eating usually feeds Koo at the same time.
• Shower. The shower room by the bed on the Cleanse Walker — requires stored water.
• Deep talks. The first one also pops the Man’s Best Friend trophy.
• Finish his research. Koo’s Item Research and Skill Research projects both grant rapport when they complete.

You can’t lose a rank. If Koo goes down in a fight you lose progress inside the current rank only — the ranks themselves are permanent. There is also no gift system in this game, despite what the genre might lead you to expect.

Raising Kagura’s Rapport

• Talk to her every time you’re aboard — and specifically before a big boss fight, which triggers extra scenes.
• Complete Cooking Research — hand over cook books you find (see cooking guide).
• Complete Grow Research — plant Crop Seedlings in the Grow Chamber.
• Hatch eggs in the Incubator (see Fertilized Eggs).

She can only run one research project at a time. Switching mid-way doesn’t lose progress, but only a completed project grants rapport — so don’t leave three half-finished.

What Each Side Gives You

Koo: more skill, item and charm slots. The item slots matter more than they sound — anything you slot there, Koo uses automatically without you issuing a command, so a healing item in a slot is a free extra heal per fight. Skill slots enable things like laying mines, taunting to pull aggro, and throwing recovery items. Higher rapport also widens the pool of skills you can research.

Kagura: the higher her rank, the more rations you automatically carry when leaving the Cleanse Walker. Two ranks give named rewards:

These are among the strongest meals in the game and cannot be found anywhere in the world — maxing Kagura is the only way to get them. That makes her track meaningfully more rewarding than most players assume.

Rapport Trophies

Full platinum route in the trophy guide. Don’t save rapport for a cleanup pass — spread the interactions across the whole playthrough, because the daily-ish cooldowns mean you physically cannot rush it at the end.

The Efficient Base Routine

Every time you dock at the Cleanse Walker, run the same loop: check Koo’s research, pet and feed him, talk to Kagura, check the Grow Chamber, spend skill points, upgrade gear at the workbench, eat a meal, then rest to depart. That covers both rapport tracks and every time-gated system in one pass.

Research is the passive half of rapport, and it advances by playing — exploring new areas, defeating Golems and Nushi, talking to Keepers, finding hidden weapons and books. Higher-tier projects take longer, so start them before you head out rather than when you return.

What Isn’t Known Yet

No source has published the per-rank breakdown — how many points each interaction is worth, the threshold for each rank, or exactly how many slots open at which rank. That’s because the game never shows the numbers: there is no visible point counter, only the bar. We’re not going to invent a table for it. Similarly, no named reward has been documented for Koo at Rank 10 beyond the trophy itself.

Frequently Asked Questions