
I think the plushie is Ayame’s favourite. Shuu learnt that after coming to his house, so he bought Ayame the key chain later. When he had his heat at Ayame’s house, he was clinging onto it for comfort and Ayame gave up his plushie for him, which is such a cute gesture :)
If you have seen the sketches of their baby, he wants to be like daddy and he loves Mamu-chan too.

yes :) both ayame/kaede and also shuu's dad don't agree wit hthe omegaverse system. they want to give their partners the freedom of choice to stay with them, so shuu's dad never bit his mom, and ayame basically in the last chapter proposed in his own way to shuu in the conversation they have about not pairing. it's intensely romantic!!

yes! I was wondering if there was a cut story though for why Ayame likes the plush. it seems very randomly interjected - maybe just for fun and they have cute little interactions for it - but since everyone Ayame has done in life is for Shuu, I wouldn't be surprised if there is missing backstory on it!!! like when they went to school together maybe Ayame dragged Shuu to go play arcade games and they won the plush but Shuu thinking Ayame was bullying him said he didn't want it. or something else - i think there's possible backstory we're missing!

so i've been obsessed with this series and i stalked the author's twitter - i think you're right!!!! there's a drawing she made of baby ayame and kaede and ayame is hugging the plushie! and their mom is looking at them like omg adorable! and then it cuts to a picture of them in like high school lookin all punk and manly/grumpy and she's so disappointed hahah. but you were right!! (ps totally go stalk her twitter she made sooo many cute little extras for the series)

We should start a Hanagara Tsumi appreciation club together! Lol and I’m already a follower of her Twitter. Do you notice small details like Sumire (their son’s name) has a black Mamu-chan plushie? Before getting the keychain from Shuu Ayame hadn’t known that there’s black Mamu-chan. I bet they have a collection at home now :p
GUYS i'm re-reading and i had forgotten i was 100% looking forward to and forgot since it's been a while a chapter dedicated to all of ayame's expressions and reactions to shuu that shuu missed but we never got that in the end!!
1) when shuu said he never wanted to see ayame again during sex we only see ayame's back - would be beautifully devastating to see his tortured expression
2) when he tells shuu he will never bear his child regarding the pregnancy test - i want to see REGRET on ayame's face after that JEEZ MAN WOT YOU DOIN
3) shuu is in heat/sick and at ayame's house hugging a plushie (mamu-chan) from ayame's place which ayame momentarily snatches from him but lets him hold in the end - was there any significance to this??? maybe in the past he meant to give it to shuu but couldn't pluck up the courage so now has just been holding onto it. there's also a later scene that shuu buys a keychain mamu chan for ayame and a flashback of ayame and his brother talking in the past while he throws mamu in the air- must have meant something!
4) shuu asks ayame out to lunch and you can see ayame blushing from the back - would love to see his giddy face
5) all da sex when they confessed it the latest chap.
edit: 6) the rooftop garden story - i wonder if Ayame ever watched Shuu taking care of the plants but never felt that he could interject during Shuu's precious ritual. and then in the last chapter Shuu invites him to do it together - would explain Ayame's shocked expression when Shuu first brings him in!
SO MANY CUT SCENES. SO SAD.