These are my opinions and headcanons, you don't have to agree, just please don't yell at me, thanks~!

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Rantaro Amami:
- Demiromantic, asexual
- Cisgender (he/they)

Kaede Akamatsu:
- Bisexual
- Demigirl (they/she)

Ryoma Hoshi:
- Heteroromantic, demisexual
- Cisgender (he/him)

Kirumi Tojo:
- Heterosexual
- Cisgender (she/her)

Angie Yonaga:
- Omniromantic, cupiosexual
- Nonbinary (they/she)

Tenko Chabashira:
- Lesbian
- Cisgender (she/her)

Korekiyo Shinguji:
- Panromantic, asexual
- Bigender (any pronouns)

Miu Iruma:
- Pansexual
- Cisgender (she/her)

Gonta Gokuhara:
- Panromantic, asexual
- Cisgender (any pronouns)

Kokichi Oma:
- Panromantic, demisexual
- Genderfluid (any pronouns)

Kaito Momota:
- Heterosexual
- Cisgender (he/him)

Tsumugi Shirogane:
- Omnisexual
- Cisgender (she/her)

Kiibo:
- Biromantic, cupiosexual
- Agender (they/them)

Himiko Yumeno:
- Heterosexual
- Cisgender (she/her)

Maki Harukawa:
- Biromantic, demisexual
- Cisgender (she/they)

Shuichi Saihara:
- Bisexual
- Demiboy (he/they)