Thinking of delivering milk with 〜ようと思う
Grammar Explanation: Thinking of doing with 〜ようと思う

Takeru and Ayumu talk about now being in high school.
- 歩:
- 「ああ…バイトができるな」
- “Yeah, I can get a part-time job.”
- 「オレは牛乳
( 配達( をしようと思ってる」- “I'm thinking of doing milk delivery.”
- “Yeah, I can get a part-time job.”
Key Points
しようと思ってる states a current intention
〜ようと思う means to be thinking of doing something or to intend to do it.
The progressive 思ってる shows this is Ayumu’s current plan, not a sudden decision in the moment.
しよう is the volitional form of する
牛乳
( 配達( をする is “to do milk delivery”.Since the verb is する, the volitional form used before と思う is しよう.
オレは sets Ayumu against possible alternatives
After talking about high school jobs generally, オレは frames this as Ayumu’s own plan.
The subject marker は helps contrast his choice with what someone else might do.