Devil Children Gaiden: White Book Manga
This one shot is by Fuyunagi Reku (冬凪 れく), a long standing Evangelion fan behind some of the official Movic (ムービック) published 4koma when the anime was new. They are still to this day of the Evangelion doujin circle "Raytrec".
Regrettably, the original mangaka seems to have lost their copy, despite having enjoyed the experience of working with Atlus.
While no Evangelion characters are to be found here, Masaki and Takaharu are well represented at their bloodiest, with Takaharu's sister Shou standing between them.