Yoshino tells Masamune exactly what happened in their past and then convinces him to stop Gasou from getting too close to Aki.
I ended up helping you out 
because you remembered Aki-sama.
.انتهى بي الحال أساعدك لأنك تذكرت أكي-ساما
Ich habe dir schließlich geholfen,
weil du dich an Aki-sama erinnert hast.
tu te souvenais aussi de Mlle Aki,
alors je t’ai aidé
मैंने आख़िर में तुम्हारी मदद की
क्योंकि तुम्हें मिस अकी याद थीं।
Mi sono ritrovata ad aiutarti 
perché tu ricordavi Aki-sama.
Eu acabei ajudando você
porque se lembrou da Aki-sama.
я стала помогать тебе,
потому что ты не забыл Аки.