Oof, this is difficult. Well top of the top are three scenes from Little Busters!. Spoiler warning for Refrain.
Firstly, naturally Last Episode: Little Busters. The buildup, the drama, everything, it was just perfect.
Secondly, Cheap Tricks, Called Game. From all three perspectives, forming the full picture. Easily one of the most memorable scenes in any Key visual novel.
Thirdly, saving everyone from the bus. Going through that series of choices with the ‘Unnamed Track’ playing in the background, finding Kyousuke, being forced to temporarily leave him behind …just wow. If this scene hadn’t been executed as well as it was, the ending of Refrain wouldn’t have sat nearly as well with me.
These three are definitely my favorites overall. But just leaving it at that is doing all the other amazing scenes an injustice.
From Tomoyo After, final arc, the final computer monologue. Oh my god did that get me emotional.
From CLANNAD, After Story arc, Naoyuki’s backstory, the scene where Tomoya hugs Ushio in the field, and then when Tomoya and Naoyuki have their final talk. The anime REALLY did these scenes justice, and if it hadn’t been for them I might not have continued to look into Key at all.
From Rewrite, Lucia’s arc, when Kotarou rewrites himself. Bar none my favorite applicance of the Rewrite power, as it really goes deep into what it’s actually capable of. Without Kotarou Lucia really wouldn’t have had anyone beside her.
Some Angel Beats!, although not on the same level as the others, Episode 9. All of it. Easily my favorite part of the series.
And then there’s more Little Busters! of course. From Haruka’s arc, the bad end as well as the reconciliation, from Kud’s arc, the bad end, from Refrain, the hospital scene, again from Refrain, Episode Masato, Kengo and Kyousuke.
I think that should do it for now.