It’s Personnel (Hitogoto Desu Kara) is ending after the next chapter release on January 18, as announced by creator, Yuni on Twitter.
DAYS soccer manga will end after the final issue is released on January 20, as announced in the seventh issue of Kodansha’s Weekly Shōnen Magazine.
Namazakana’s manga adaptation of the original television anime project Keishichō Tokumu-bu Tokushu Kyōaku-han Taisaku-Shitsu Dai-Nana-ka -Tokunana- (Special Crime Investigation Unit Special 7) ended with the publishing of the final chapter on January 5.
Sources: Monthly Comic Garden February issue via Anime News Network
Haro Aso’s Alice in Borderland Retry (Imawa no Kuni no Alice Retry) manga will end after the last chapter is published on January 20.
Sources: Weekly Shonen Sunday issue #6 via Anime News Network