Jijii No Koi
It's so sweet and lovely and truly peak old man yaoi. I hope someone picks up this series and translates the rest but even if they don't, the one chapter in itself is a precious oneshot
Mirror of wishes
Cute friends to lovers with the usual misunderstandings and angst but make it smutty and add a magic mirror lol. Short and cute
Return match
Word on the street is that these translations are trash so I'll let this one sit a bit longer until better ones come out
Bokura ga Koi wo Ushinau Riyuu
this is one of my all time favorites. It's so lovely and heartwarming, with the relationship being so warm and cozy. I enjoyed the characters and the way they grew and learned to love again (ignoring the incest origin story bc lol wtf but ig it used to be in a lot of of bls and mangas in general). I've read this several times already and I'll definitely reread it again ~
Kusuburu Kemuri no Nare no Hate
Hmmmm the cousins thing is fine, it's when the romantic love started that's the problem....12 year gap and you've known him since he was born and developed feelings for an 8 year old *I know what u are Haru*
Bebe-san no Koibito