IOSYS (Ji̍t-gí: イオシス, Iosisu) sī 1998-nî tī Ji̍t-pún Pak-hái-tō khí-ke--ê tông-jîn oa̍h-tāng--ê thoân-thé, pau-hâm chhui-chut Tôhô Project--ê im-ga̍k CD.
- 魔理沙は大変なものを盗んでいきました (Marisa wa Taihen na Mono o Nezundeikimasita, Marisa thau-the̍h tiōng-iàu--ê mi̍h-kiāⁿ)
- チルノのパーフェクトさんすう教室 (Tiruno no Pâfekuto Sansû Kyôsitu, Tiruno--ê oân-bí sǹg-sò͘ kàu-sek)