Ep. 5: Okabe and Kurisu return with the IBN 5100 while Suzuha warns Okabe about Kurisu.
Aired on May 4, 2011

Okabe and Kurisu bring the IBN 5100 to the lab, where Suzuha reacts strangely to Kurisu. While Okabe gathers parts to connect the computer, Suzuha warns him to be careful around Kurisu. Daru uses the IBN 5100's unique programming language to decode SERN's encrypted files, revealing that humans were found dead in a gel-like state across different times. Kurisu explains that this condition results from matter passing through a space-time gap smaller than the matter itself, crushing it at the molecular level. After learning about SERN's experiments and their timeline implications, Okabe is shocked but vows to perfect his phone microwave before SERN can.
Episodes
- Ep. 1 · Okabe attends a seminar, witnesses a murder, and experiences a timeline shift involving a crashed satellite.
- Ep. 2 · Okabe encounters Kurisu alive and meets Suzuha while investigating John Titor's reappearance and the IBN 5100.
- Ep. 3 · Okabe discovers the microwave is a time machine after a lab explosion and text rerouting incident.
- Ep. 4 · Okabe and Kurisu seek the IBN 5100 to decrypt SERN's time travel data.
- Ep. 5 · Okabe and Kurisu return with the IBN 5100 while Suzuha warns Okabe about Kurisu.
- Ep. 6 · The group experiments with D-Mail rules while recruiting Moeka as Lab Member No. 005
- Ep. 7 · Okabe tests the Phone Microwave by sending lottery numbers to the past, triggering a world line shift.
- Ep. 8 · Okabe explains world line shifts and Moeka sends a D-Mail altering reality.
- Ep. 9 · Faris reveals her true identity and family history regarding the missing IBN 5100 computer.