Okay! Sorry for the wait! Here's a surefire guide to Souma!
[[[spoilers CLEARLY]]]
1. What brings you here?
2. It's okay, I'll hear him out.
3. Run Away.
4. Serve him yourself
5. Chase After him.
6. Invite him over to share Gram's dinner
7. Wish for Souma to be nice to you.
8. Invite him in/Get him a drink
9. Don't interfere
10 . Boop the snoot/Misdirect
11. Tell her about Souma
12. Take a quick Nap
----- Souma's Route ---- in case you need one once you're in XD
13. Bring him pudding
14. Stay Still
15. I'm not sure myself
16. To Souma's place