Hey, does anyone know this manga about a ghost girl bound to a school that gets stuck while passing through the walls (i distinctly remember her getting stuck in the blackboard while passing through the wall and starts writing chalk messages on it). It's a romcom kind of like tasogare otome. In another scene the guy was sitting out with his guy friend near the steps leading into the building or smthn and the guy was told he's too donkan-ish or smthn along those lines and that he won't find a gf. Thank you for your time.

Ano Hi Mita Hana no Namae o Boku-tachi wa Mada Shiranai.

Or

Ghost Protagonist category. Only 4 pages so you might find it.
https://www.mangaupdates.com/series.html?category=Ghost%20Protagonist

Rokkon Shojo
TeppenMezashiteTondeAruYo
Let justice be done, though the heavens fall

Hi, thank you for your response and assistance, pot chan, but the heroine is not the main character. I went through the tags one time but I couldn't spot it in the relevant tags. I'll try doing it again. The issue has been im not sure what the description and cover looked like so either im missing it or not seeing it.