For this ending I will write exactly what choices I made and where, if when you are playing through you get to a choice that isn't listed below, it's because it didn't matter to the outcome for the trophy so I left it out.
*** Spoiler - click to reveal ***Lesson Choice: I always used MATHS CLASS
[04/11] Join the infirmary staff.
[04/15] I think I'll neaten the desk.
[04/21] Talk to Kazuaki.
[05/21] Go to the first-aid tent.
[06/22] Go to the infirmary.
[06/22] I came here to hear your voice.
[07/07] The mad love of a fallen angel.
[07/07] No thank you.
[07/13] A fallen angel.
[07/20] The time is not yet come.
[07/24] Forget it.
[08/06] Invite Anghel.
[08/30] Return to my glorious abode.
[09/01] Accept the contract!
[09/25] Do what you must.
[10/07] Side with Kazuaki.
[01/01] Fulfillment in conquest.
[02/02] Bitter black beans.
[02/03] Eye of Judgment - No'chin Ki Shum - Blauhimmen Flight.