LogFAQs > #959737524

what helped me more than anything when doing a max s.link in a single playthrough (non new game plus) is the following:

getting to rank 4 in knowledge super early (before the first exam)
maxing expression asap
never doing a s.link that's not going to level up (i.e. saving it until it gets a "natural" boost through test scores/hanging out with them at night/reading fortunes).
the exception to the above might be eri, who is a pain as we all know
save scumming for the dialogue responses (naturally)

somehow I did it without a guide on my third playthrough and had nearly a week to spare

I've always thought that maxing all the slinks without having to raise stats would be too easy, so I've never really tried

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