Age: 24
Jun Aikawa has built a reputation as humanity's strongest contractor—basically, if you can pay her, she'll handle it, no questions asked about legality. She's got an intimidating skill set to back it up: master of disguise, voice mimicry, lock picking (yes, even fingerprint scanners), and mind reading.
She first shows up in the series during the epilogue of the opening book, where she's called in to help with a murder investigation on an island. Her arrival reframes the whole case, revealing details nobody else caught. Early on, Ii-chan assumes she's male, which she apparently doesn't bother correcting.
Her dynamic with I is weirdly friendly on her end, but he tends to be unsettled whenever she's around. Fans often note the tension there—he's clearly uncomfortable with her, even if she doesn't seem to mind much.
Content compiled by AnimeList.moe from publicly available sources.