Just if you are wondering here it is the Ichinose route: 
2日: Ichinose
3日: Ichinose+Toudou
4日: Ichinose
       Ichinose (night)
5日: Ichinose
       - "Japanese Dance? Unexpected."
6日: Ichinose
7日: Ichinose + Arisato
8日: Ichinose
9-10日: Typhoon
            - "Let Sakuma handle it." 

11日: Ichinose
         - Choice doesn't matter
12日: Ichinose
13日: Ichinose + Toudou
         - Choice doesn't matter.
14日: Ichinose + Toudou
         - "'I'll get some help." 
15日: Ichinose
         - Try to persuade him.
         - Help with weight training.
16日: Trespasser
         - Install surveillance cameras.
         Ichinose
         - Scratch his chest.  
17日: Ichinose
18日: Ichinose
19日: Ichinose
         - "Put them in a vase." 
20日: Ichinose
21日: Ichinose
22日: Ichinose
         - Don't save him.
23日: Change Uniforms?
         - Change them.
         Toudou or Arisato
24日: Toudou or Arisato 
25日: Do nothing
26日: Do nothing
27日: Do nothing
28日: Do nothing
29日: Do nothing
30日: True End No.22Very simple...