Admitting defeat, Tomiyama tries to pass Shishitoren on to Umemiya — to which Umemiya declares, "Instead of taking over your team, we'll be friends!"  Bofurin and Shishitoren are dumbfounded at this turn of events but talks progress, food is brought, and a celebratory afterparty starts.
In that case, you can just say
this is a welcome party.
في تلك الحالة، يمكنك القول بأنّ
هذه حفلة ترحيب
Warum nennen wir’s dann
nich’ einfach Willkommensparty?
Con una fiesta de bienvenida bastaba.
Con una fiesta de bienvenida bastaba.
On devrait appeler ça
une fête de bienvenue, alors.
Allora potremmo chiamarla
"festa di benvenuto", no?
Então por que não chamamos
de festa de boas-vindas?
Хочешь, считай это
вечеринкой в честь знакомства.