Living Laser vs Hiyuki Kagari: who would win?

Living Laser favored — Slight edge (~55%)

Living Laser · Marvel · Photon Form

Tier
8-B
Attack Potency
City Block Level
Speed
Speed Of Light
Durability
City Block Level

Hiyuki Kagari · Kagurabachi · Base

Tier
8-B
Attack Potency
City Block Level
Speed
Massively Hypersonic+
Durability
City Block Level

A heuristic estimate from normalized VS Battles Wiki stats: tier, attack potency, speed and durability.