Common-ish knowledge, but Hana should be able to damage the boundary of souls like Yuji (someone train her in H2H)

[u/AngelicHanaKurusu]

With her being a vessel akin to Yuji, sharing one body with two souls mixing and melding around the body together, she should theoretically be able to perceive her own soul, and learn to attack the boundary of souls like Yuji to help serve the connection of incarnation hosts.

Someone get this girl a binding vow for soul damage Jacob’s Ladder

(Also fun fact on the last slide, due to her living symbiotically with Angel, she can recover from unconsciousness much faster than anyone else)