Kasei, the Tyrant ✓ corroborated

Area: Tyrant's Canyon ✓ corroborated · Kill achievement: THE FALLEN TYRANT — currently unlocked by 47.7% of players (Steam global stats, updated July 24, 2026).

The canyon Alpha and the famous early wall: barely half of all players get past him. Two phases — and the second one is faster, not slower.

Strategy

Phase one is slow and heavy — readable swings you can deflect on reaction. When Kasei picks up his weapon the fight flips: longer reach, faster strings, and much less recovery time to punish. ✓ corroborated

Source: Multiple demo-final-boss guides describe the same club-to-blade phase change

Spend Boss SP on Soul Art upgrades before this fight and keep your healing charges for phase two; the phase-one patterns are safe enough to fight cleanly once learned. community-reported

Source: Community strategy consensus from demo-era guides; re-verification in progress

Core mechanics that matter here

Deflect / parry — timed blocks that build the boss’s Resolve Bar. ✓ corroborated
Instinct Counter — the heavy counterattack available when the Resolve Bar is full after perfect parries. ✓ corroborated
Soul Arts & Boss SP — upgrades bought with SP earned from bosses; the Meteor Slice / Dash / Zone lines each have max-upgrade achievements. ✓ Steam-verified
Ghost Summons — defeated bosses can be unlocked as summons with passive perks. ✓ corroborated

Found something wrong, or beat this fight with a different setup? Send it in — corrections ship same-day and reports are credited.