Jojo's Bizarre Adventure 2 Part 8: Jojolion by Hirohiko Araki

[Volume 2 Part 8] In search of his true identity, the mysterious young man sneaks into Kira's apartment with Yasuho--their only lead. But inside, they're suddenly targeted by a Stand attack from an unseen 'man on the upper floor.' With no visible enemy and danger closing in from above, the question remains... who is this hidden attacker?!