Was Natsuki's first love, Atri? His beautiful childhood memories are gradually being overwritten. Despite his unwillingness to admit it was her the facts around him are lining up to force him to, but he continues to deny it. 
Minamo also told me that 
I learn things quickly!
!أخبرتني مينامو بأنّني سريعة التعلُّم
Minamo hat mir selbst gesagt,
dass ich eine gute Schülerin bin!
Minamo me dijo que aprendo rápido.
Minamo me ha dicho que aprendo rápido.
Minamo m’a félicitée.
Selon elle, j’apprends très vite.
E anche Minamo mi ha detto
Минамо сказала, что я хорошо учусь.