Junpei Yoshino

A Yellow Jujutsu Obstructor who blends Poison damage-over-time with debuffs and a protective tanking role. His standout theme is that many of his debuffs scale stronger the more turns of Poison the enemy is carrying — so the longer his Poison stays ticking, the harder he weakens the target.

S3 (Poison Stab) is his core tool: it deals damage, applies long-lasting Poison, and stacks a large Damage Received debuff on the target that grows with the Poison already present — making it both his main debuff and the setup for the rest of his kit.

His Ultimate hits hard, refreshes Poison, and lowers the enemy's Jujutsu Stat (again scaling with Poison duration), so it caps off his debuff stack while dealing his biggest single hit. His Poison is also a relatively rare status that few units can apply, giving him niche value.

S1 is a strong tool against Jujutsu-type enemies: it stacks a Jujutsu Stat reduction on the target, sharply cutting their Jujutsu damage output — making him a soft counter to Jujutsu attackers. Note that every one of his skills, even S1, costs Cursed Energy.

S2 (Moon Dregs) is his protective tool: he taunts all enemies onto himself, grants himself Attack Nullification, buffs his own Jujutsu, and cuts the team's damage taken — letting him soak a turn of enemy fire to shield the squad.

A passive ramps his damage based on how many Tokyo Jujutsu High allies are on the team, rewarding themed Yellow line-ups. His SP form is a big upgrade: it turns S2 into a much stronger team-protection button (more damage reduction, team stat buffs, Stun immunity for an ally) and strengthens his Poison and debuffs.

Overall a debuff-and-protect Obstructor rather than a pure damage dealer. He is at his best in Poison/DoT-focused Yellow teams where his scaling debuffs amplify the squad — and noticeably stronger once his SP is unlocked.