Altair of the Point at Infinity: Vega and Altair.Rintaro continues his efforts to qualify to study overseas, which seems to trouble Mayuri. Meanwhile, Daru and Maho continue to develop the Time Leap Machine with little success when Rintaro arrives and discovers it. He then angrily rants about how it is impossible to save both Mayuri and Kurisu, and that he chose to sacrifice Kurisu to protect Mayuri and the Beta worldline...