I haven't missed any events (day 1 player), but, both OG fate/zero and re-run happened when I was feeling lazy af, so, my Iri is still just NP3 and I definitely wouldn't mind getting two more copies.

Both Shiki and Janta event. I'm still newbie at that time, so I can't get Janta and I can't max Shiki.

Basically any and all welfare servant events I missed. Shiki, kintoki (damn I missed golden sumo), irisveil, Santa quetz, Santa salter...the list goes on.

Ah yes the Shiki event. After watching all of Kara no Kyokai I regret not being able to get her.

Missed Halloween 3 and silver Eli due to being lazy. I haven’t missed much, joined after the 1st anniversary NA so just some CEs but just that

The summer doujin event shit lmao

I joined quite early so I missed only a few events first run

But I did all events at the end

So I will go with summer 1

Stupid dumb me that didn't understood the new event bonus search feature. That is why I couldn't get Kintoki the first time. The second time I was still weak thanks to my old phone back then.

I joined a few months in, but got to play all the reruns, so I have all CEs and welfares from all events.