Hi, I played the game multiple times and I really liked it, and I also came up with multiple ideas I wanted to share. I hope some of them may be useful. Thank you again for the game and sorry about my english, I speak spanish 
-If Akane rejects Erika’s shakes sometimes, Akane may regret it and decide to go get a shake for herself after the gym without Erika knowing, helping to sabotage Erika’s diet and at the same time causing Akane to give in to her desires. This may result in the days when Erika does not offer Akane coffee, Akane may decide to go for one for herself, and later, once Akane regularly accepts coffees, she may decide to go for another. after the gym, of course making that after a certain point you can’t deny it if you’ve been too lenient. You can do something similar with burgers or have Akane directly suggest Erika go to the Burger place to eat and sabotage her diet.
-about the midnight donuts, it would be great if erika listened to akane and bought more donuts in later stages and make akane convince erika to eat some because she is very full or eat them all with erika’s help. Also, if you’ve been lenient, it would be nice if Akane couldn’t refuse the donuts Erika offers her or even wake up before Erika does and start eating some without her.
-It would also be good that in first stage, while you wait you can see food lying around the house and you choose whether to eat it or not. In later stages Akane directly grabs something to eat, chooses to grab more than one donut, or directly appears surrounded by donuts on the couch without you being able to decide.
-When the carboload event triggers akane could eat more or less depending on the stage, and have the option to take a little more while erika is asleep, making her realize that food is missing and go to your room to laugh at you.
-in night out with chika, akane can suggest going to dinner earlier so that the alcohol doesn’t affect them so much, although later they drink more because it doesn’t get them high
-In the event in which chika comes home with several donuts while you wait you could refuse to eat making her eat both, offer to eat one and in further stages tell her to buy 3, or 4 instead of just 2. It would also be great that if you refuse donuts but akane starts to get carried away and eat more at other events there will come a point where she can’t refuse donuts and vice versa.
-In later stages you could get out of bed by yourself to get something from the fridge and Erika catches you causing her to eat with you, to feed you or to laught at you
-In later stages on the event of having sex with the stranger in your room, Akane could feel hungry and horny so that she goes down to eat something, making it impossible to decide if she has been indulgent.
-You could add something to the event in which you and chika talk in your room as it is an event that only makes sense the first time, because akane recognizes that she likes to feel fat, but it does not contribute to the gameplay or narrative if repeated. I thought you can convince chika to eat something together or to play with your belly.
-It would also be good if you considered a route where Akane doesn’t really want to gain weight but can’t resist and has a more negative reaction to it, a route where she isn’t a feedee but ends up accepting that she likes to eat and even enjoying it 2 or 3 stages ahead of how it’s done in the current build, though hey, it’s just an idea and would take a lot longer. For example, this route can be conditioned by how she feels about dreams or looking in the mirror when she gains weight.
-Finally, in later stages, when Akane already has stretch marks and sometimes brings a coffee to the gym by herself, she could also decide whether to bring a donut if she has been greedy and make it automatic if she is even more so, plus you can take 2 of each for inviting erika when she’s thinner and sabotage her, or eat it all by yourself.