He studies hard every day.

When a baby starts weaning, you begin to give them solid food little by little.

The baby has started to wean.

Day after day, he continued to strive to solve the problem.

She has a large breast.

Mnemosyne is the goddess of memory in Greek mythology.

She gave him a kiss.

He kissed her.

The mouse squeaked 'chu'.

I think that person is what you call a 'chuunibyou'.