Responses

Yep, SPOILERS
after flashback Sejin will leave, focusing on his work but always feeling sadness from bond. Then Ido will appear to do colab with their companies, Sejin will finnally talk back at him and ask questions (Ido's responses are comical) but Ido will be just nice for short time so he can tell his goodbays before he unalive himself, Sejin will get on what's going on and stop him and do all emotional work.
Can we skip to the good part?