I fapped to the CG.
Also, your troops right now are just a bit lacking, try to boost them up with books, and hire more commanders. You have plenty of NP to spare for that purpose.
Since you conquered Akashi, hire Kazemaru and boost up his stats to 6's, then character clear him (using the wiki). He becomes a powerhouse. As well, hire Senhime. She is a great footsoldier.
Use more SAT bonuses on reinforcements, they are great characters to have.
Also, I assume only 4 gourds have been broken thus far? In that case, next you should take on the Miko Institute to get Natori, followed by Uesugi to get Kenshin and Ai. Miko Institute is a bit difficult, but Uesugi is piss easy once you discover that fielding Rance when Kenshin is on the other side results in an auto win, up until you take Mazo.