Hints, not spoilers, for good endings for all 5

[Merlyn_LeRoy]

I don't think many people need this, but the summaries work so well for each girl...

Keep running after Emi, just be careful not to blunder right into her
For Hanako, sacrifice your knight
Don't hide things from Lilly
Try to understand Rin (you won't be able to, but try anyway)
Shizune is the simplest; just don't be a dick

I think all of it put together works pretty well for romance in the real world, for that matter.

[DaMan65]

Sound advice

I salute you

[Guest]

Shizune is the simplest; just don't be a dick

Nice pun.

[Evvinartopski]

Lilly's path:

[Panty Supervisor]

Keep running after Emi, just be careful not to blunder right into her

My strategy was more like "Keep running after Emi, no matter what". I mean, sure, I was chased out of her house at some point, but in the end, it worked out quite well.

For Hanako, sacrifice your knight

Ohohoho, very clever.

[Zahlman]

Simpler version: You know all the things Hisao does that you can't control and that really piss you off and that seem to be the source of tension in the relationship? Pick the options that imply doing the opposite for once.

[Guest]

Shizune is the simplest; just don't be a dick

As opposed to Secret Mischa "path/ending" :

*THINK. WITH YOUR PENIS

[Merlyn_LeRoy]

Keep running after Emi, just be careful not to blunder right into her

My strategy was more like "Keep running after Emi, no matter what". I mean, sure, I was chased out of her house at some point, but in the end, it worked out quite well.

Originally, I just had "Keep running after Emi", but I've seen claims that it's possible to miss the good end if you overdo it. If you can't screw up that way, drop the second part.

[Caesius]

Originally, I just had "Keep running after Emi", but I've seen claims that it's possible to miss the good end if you overdo it. If you can't screw up that way, drop the second part.

I think better advice for Emi's route is to "Keep running after her, but know that you can't catch up to her on your own."

[sporkaganza]

I think the best advice for Emi's route is, you know, actually contained in Emi's route. Listen to what the characters tell you and you'll be fine. I'm talking chiefly about Mutou's science lecture, of course.

[DaMan65]

Originally, I just had "Keep running after Emi", but I've seen claims that it's possible to miss the good end if you overdo it. If you can't screw up that way, drop the second part.

I think better advice for Emi's route is to "Keep running after her, but know that you can't catch up to her on your own."

Even better

[Zet]

Keep running after Emi, just be careful not to blunder right into her

So what you're saying is... Run after Emi; Receive lemons?

[C27]

Listen to what the characters tell you and you'll be fine.

This is probably all the advice you need...